76664099387 has 2 divisors, whose sum is σ = 76664099388. Its totient is φ = 76664099386.

The previous prime is 76664099273. The next prime is 76664099429. The reversal of 76664099387 is 78399046667.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 76664099387 - 2²⁰ = 76663050811 is a prime.

It is not a weakly prime, because it can be changed into another prime (76664096387) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 38332049693 + 38332049694.

It is an arithmetic number, because the mean of its divisors is an integer number (38332049694).

Almost surely, 2^76664099387 is an apocalyptic number.

76664099387 is a deficient number, since it is larger than the sum of its proper divisors (1).

76664099387 is an equidigital number, since it uses as much as digits as its factorization.

76664099387 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 82301184, while the sum is 65.

The spelling of 76664099387 in words is "seventy-six billion, six hundred sixty-four million, ninety-nine thousand, three hundred eighty-seven".