79782681964 has 12 divisors (see below), whose sum is σ = 139623264424. Its totient is φ = 39890320704.

The previous prime is 79782681889. The next prime is 79782682009. The reversal of 79782681964 is 46918628797.

It is a self number, because there is not a number n which added to its sum of digits gives 79782681964.

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 3 ways as a sum of consecutive naturals, for example, 63069 + ... + 404404.

Almost surely, 2^79782681964 is an apocalyptic number.

It is an amenable number.

79782681964 is a deficient number, since it is larger than the sum of its proper divisors (59840582460).

79782681964 is a wasteful number, since it uses less digits than its factorization.

79782681964 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 510144 (or 510142 counting only the distinct ones).

The product of its digits is 73156608, while the sum is 67.

The spelling of 79782681964 in words is "seventy-nine billion, seven hundred eighty-two million, six hundred eighty-one thousand, nine hundred sixty-four".