| Base | Representation |
|---|---|
| bin | 10110010010011010… |
| … | …11110010101100100 |
| 3 | 1010212220112212221210 |
| 4 | 23021031132111210 |
| 5 | 144001203442030 |
| 6 | 5255202111420 |
| 7 | 602343443151 |
| oct | 131115362544 |
| 9 | 33786485853 |
| 10 | 11965687140 |
| 11 | 5090355940 |
| 12 | 239b34b570 |
| 13 | 118900c764 |
| 14 | 817249228 |
| 15 | 4a0743bb0 |
| hex | 2c935e564 |
11965687140 has 96 divisors (see below), whose sum is σ = 36679458816. Its totient is φ = 2890477440.
The previous prime is 11965687127. The next prime is 11965687169. The reversal of 11965687140 is 4178656911.
It is a happy number.
11965687140 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.
It is a super-2 number, since 2×119656871402 (a number of 21 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 11965687140.
It is an unprimeable number.
It is a pernicious number, because its binary representation contains a prime number (17) of ones.
It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 154749 + ... + 218811.
It is an arithmetic number, because the mean of its divisors is an integer number (382077696).
Almost surely, 211965687140 is an apocalyptic number.
11965687140 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 11965687140, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (18339729408).
11965687140 is an abundant number, since it is smaller than the sum of its proper divisors (24713771676).
It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.
11965687140 is a wasteful number, since it uses less digits than its factorization.
11965687140 is an odious number, because the sum of its binary digits is odd.
The sum of its prime factors is 64369 (or 64367 counting only the distinct ones).
The product of its (nonzero) digits is 362880, while the sum is 48.
It can be divided in two parts, 119656871 and 40, that added together give a palindrome (119656911).
The spelling of 11965687140 in words is "eleven billion, nine hundred sixty-five million, six hundred eighty-seven thousand, one hundred forty".
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