76644769642 has 16 divisors (see below), whose sum is σ = 131561027712. Its totient is φ = 32805259920.

The previous prime is 76644769609. The next prime is 76644769661. The reversal of 76644769642 is 24696744667.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 3530334 + ... + 3551977.

It is an arithmetic number, because the mean of its divisors is an integer number (8222564232).

Almost surely, 2^76644769642 is an apocalyptic number.

76644769642 is a deficient number, since it is larger than the sum of its proper divisors (54916258070).

76644769642 is a wasteful number, since it uses less digits than its factorization.

76644769642 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 7083093.

The product of its digits is 73156608, while the sum is 61.

The spelling of 76644769642 in words is "seventy-six billion, six hundred forty-four million, seven hundred sixty-nine thousand, six hundred forty-two".