76885715957 has 2 divisors, whose sum is σ = 76885715958. Its totient is φ = 76885715956.

The previous prime is 76885715923. The next prime is 76885715971. The reversal of 76885715957 is 75951758867.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 76854255076 + 31460881 = 277226^2 + 5609^2 .

It is a cyclic number.

It is not a de Polignac number, because 76885715957 - 2²² = 76881521653 is a prime.

It is a super-2 number, since 2×76885715957² (a number of 23 digits) contains 22 as substring.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (76885715987) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 38442857978 + 38442857979.

It is an arithmetic number, because the mean of its divisors is an integer number (38442857979).

Almost surely, 2^76885715957 is an apocalyptic number.

It is an amenable number.

76885715957 is a deficient number, since it is larger than the sum of its proper divisors (1).

76885715957 is an equidigital number, since it uses as much as digits as its factorization.

76885715957 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 148176000, while the sum is 68.

The spelling of 76885715957 in words is "seventy-six billion, eight hundred eighty-five million, seven hundred fifteen thousand, nine hundred fifty-seven".