76647779627 has 2 divisors, whose sum is σ = 76647779628. Its totient is φ = 76647779626.

The previous prime is 76647779617. The next prime is 76647779639. The reversal of 76647779627 is 72697774667.

It is a weak prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-76647779627 is a prime.

It is not a weakly prime, because it can be changed into another prime (76647779617) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 38323889813 + 38323889814.

It is an arithmetic number, because the mean of its divisors is an integer number (38323889814).

Almost surely, 2^76647779627 is an apocalyptic number.

76647779627 is a deficient number, since it is larger than the sum of its proper divisors (1).

76647779627 is an equidigital number, since it uses as much as digits as its factorization.

76647779627 is an evil number, because the sum of its binary digits is even.

The product of its digits is 261382464, while the sum is 68.

The spelling of 76647779627 in words is "seventy-six billion, six hundred forty-seven million, seven hundred seventy-nine thousand, six hundred twenty-seven".