77056658215651 has 16 divisors (see below), whose sum is σ = 81917344802304. Its totient is φ = 72330203810304.

The previous prime is 77056658215613. The next prime is 77056658215673. The reversal of 77056658215651 is 15651285665077.

It is a happy number.

It is a cyclic number.

It is not a de Polignac number, because 77056658215651 - 2²⁷ = 77056523997923 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (77056658215451) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 94659966 + ... + 95470531.

It is an arithmetic number, because the mean of its divisors is an integer number (5119834050144).

Almost surely, 2^{77056658215651} is an apocalyptic number.

77056658215651 is a deficient number, since it is larger than the sum of its proper divisors (4860686586653).

77056658215651 is a wasteful number, since it uses less digits than its factorization.

77056658215651 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 190130850.

The product of its (nonzero) digits is 105840000, while the sum is 64.

The spelling of 77056658215651 in words is "seventy-seven trillion, fifty-six billion, six hundred fifty-eight million, two hundred fifteen thousand, six hundred fifty-one".