| Base | Representation |
|---|---|
| bin | 100011110011110011… |
| … | …1010010110010001001 |
| 3 | 21100111022110001120101 |
| 4 | 1013213213102302021 |
| 5 | 2224442433001411 |
| 6 | 55154423525401 |
| 7 | 5361442415242 |
| oct | 1074747226211 |
| 9 | 240438401511 |
| 10 | 76900281481 |
| 11 | 2a682227741 |
| 12 | 12aa18b9861 |
| 13 | 7336ba7c4a |
| 14 | 3a17215cc9 |
| 15 | 20012cd8c1 |
| hex | 11e79d2c89 |
76900281481 has 3 divisors (see below), whose sum is σ = 76900558791. Its totient is φ = 76900004172.
The previous prime is 76900281463. The next prime is 76900281487. The reversal of 76900281481 is 18418200967.
The square root of 76900281481 is 277309.
It is a perfect power (a square), and thus also a powerful number.
It is a semiprime because it is the product of two primes, and also a brilliant number, because the two primes have the same length, and also an emirpimes, since its reverse is a distinct semiprime: 18418200967 = 10559 ⋅1744313.
It can be written as a sum of positive squares in only one way, i.e., 6218741881 + 70681539600 = 78859^2 + 265860^2 .
It is not a de Polignac number, because 76900281481 - 221 = 76898184329 is a prime.
It is a super-2 number, since 2×769002814812 (a number of 23 digits) contains 22 as substring.
It is a Duffinian number.
It is not an unprimeable number, because it can be changed into a prime (76900281487) by changing a digit.
It is a pernicious number, because its binary representation contains a prime number (19) of ones.
It is a polite number, since it can be written in 2 ways as a sum of consecutive naturals, for example, 138655 + ... + 415963.
It is an arithmetic number, because the mean of its divisors is an integer number (25633519597).
Almost surely, 276900281481 is an apocalyptic number.
76900281481 is the 277309-th square number.
76900281481 is the 138655-th centered octagonal number.
It is an amenable number.
76900281481 is a deficient number, since it is larger than the sum of its proper divisors (277310).
76900281481 is an frugal number, since it uses more digits than its factorization.
76900281481 is an odious number, because the sum of its binary digits is odd.
The sum of its prime factors is 554618 (or 277309 counting only the distinct ones).
The product of its (nonzero) digits is 193536, while the sum is 46.
The spelling of 76900281481 in words is "seventy-six billion, nine hundred million, two hundred eighty-one thousand, four hundred eighty-one".
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