76515196957 has 2 divisors, whose sum is σ = 76515196958. Its totient is φ = 76515196956.

The previous prime is 76515196949. The next prime is 76515196987. The reversal of 76515196957 is 75969151567.

It is a happy number.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 73785029956 + 2730167001 = 271634^2 + 52251^2 .

It is a cyclic number.

It is not a de Polignac number, because 76515196957 - 2³ = 76515196949 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 76515196895 and 76515196904.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (76515196987) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 38257598478 + 38257598479.

It is an arithmetic number, because the mean of its divisors is an integer number (38257598479).

Almost surely, 2^76515196957 is an apocalyptic number.

It is an amenable number.

76515196957 is a deficient number, since it is larger than the sum of its proper divisors (1).

76515196957 is an equidigital number, since it uses as much as digits as its factorization.

76515196957 is an evil number, because the sum of its binary digits is even.

The product of its digits is 17860500, while the sum is 61.

The spelling of 76515196957 in words is "seventy-six billion, five hundred fifteen million, one hundred ninety-six thousand, nine hundred fifty-seven".