76807117931 has 2 divisors, whose sum is σ = 76807117932. Its totient is φ = 76807117930.

The previous prime is 76807117927. The next prime is 76807117951. The reversal of 76807117931 is 13971170867.

It is a weak prime.

It is an emirp because it is prime and its reverse (13971170867) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 76807117931 - 2² = 76807117927 is a prime.

It is a super-2 number, since 2×76807117931² (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 76807117931.

It is not a weakly prime, because it can be changed into another prime (76807117901) 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 as a sum of consecutive naturals, namely, 38403558965 + 38403558966.

It is an arithmetic number, because the mean of its divisors is an integer number (38403558966).

Almost surely, 2^76807117931 is an apocalyptic number.

76807117931 is a deficient number, since it is larger than the sum of its proper divisors (1).

76807117931 is an equidigital number, since it uses as much as digits as its factorization.

76807117931 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 444528, while the sum is 50.

The spelling of 76807117931 in words is "seventy-six billion, eight hundred seven million, one hundred seventeen thousand, nine hundred thirty-one".