76515839969 has 2 divisors, whose sum is σ = 76515839970. Its totient is φ = 76515839968.

The previous prime is 76515839921. The next prime is 76515840001. The reversal of 76515839969 is 96993851567.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 76057366225 + 458473744 = 275785^2 + 21412^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-76515839969 is a prime.

It is a super-2 number, since 2×76515839969² (a number of 23 digits) contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 76515839899 and 76515839908.

It is not a weakly prime, because it can be changed into another prime (76515835969) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 38257919984 + 38257919985.

It is an arithmetic number, because the mean of its divisors is an integer number (38257919985).

Almost surely, 2^76515839969 is an apocalyptic number.

It is an amenable number.

76515839969 is a deficient number, since it is larger than the sum of its proper divisors (1).

76515839969 is an equidigital number, since it uses as much as digits as its factorization.

76515839969 is an evil number, because the sum of its binary digits is even.

The product of its digits is 110224800, while the sum is 68.

The spelling of 76515839969 in words is "seventy-six billion, five hundred fifteen million, eight hundred thirty-nine thousand, nine hundred sixty-nine".