| Base | Representation |
|---|---|
| bin | 1000011101100110101… |
| … | …0101110100010000000 |
| 3 | 111220021011222201020210 |
| 4 | 2013121222232202000 |
| 5 | 4340222224333110 |
| 6 | 150442253434120 |
| 7 | 13334536500612 |
| oct | 2073152564200 |
| 9 | 456234881223 |
| 10 | 145385777280 |
| 11 | 56726532347 |
| 12 | 2421549b940 |
| 13 | 1092c622563 |
| 14 | 7072a30db2 |
| 15 | 3bad97c520 |
| hex | 21d9aae880 |
145385777280 has 128 divisors (see below), whose sum is σ = 465844608000. Its totient is φ = 38566461440.
The previous prime is 145385777279. The next prime is 145385777281. The reversal of 145385777280 is 82777583541.
It is an interprime number because it is at equal distance from previous prime (145385777279) and next prime (145385777281).
It is a tau number, because it is divible by the number of its divisors (128).
It is a super-2 number, since 2×1453857772802 (a number of 23 digits) contains 22 as substring.
It is a self number, because there is not a number n which added to its sum of digits gives 145385777280.
It is not an unprimeable number, because it can be changed into a prime (145385777281) by changing a digit.
It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 168496 + ... + 564944.
It is an arithmetic number, because the mean of its divisors is an integer number (3639411000).
Almost surely, 2145385777280 is an apocalyptic number.
145385777280 is a gapful number since it is divisible by the number (10) formed by its first and last digit.
It is an amenable number.
It is a practical number, because each smaller number is the sum of distinct divisors of 145385777280, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (232922304000).
145385777280 is an abundant number, since it is smaller than the sum of its proper divisors (320458830720).
It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.
145385777280 is a wasteful number, since it uses less digits than its factorization.
145385777280 is an evil number, because the sum of its binary digits is even.
The sum of its prime factors is 396662 (or 396650 counting only the distinct ones).
The product of its (nonzero) digits is 13171200, while the sum is 57.
The spelling of 145385777280 in words is "one hundred forty-five billion, three hundred eighty-five million, seven hundred seventy-seven thousand, two hundred eighty".
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