63678484738 has 16 divisors (see below), whose sum is σ = 105157134720. Its totient is φ = 28679216400.

The previous prime is 63678484729. The next prime is 63678484783. The reversal of 63678484738 is 83748487636.

It is a self number, because there is not a number n which added to its sum of digits gives 63678484738.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 13275018 + ... + 13279813.

It is an arithmetic number, because the mean of its divisors is an integer number (6572320920).

Almost surely, 2^63678484738 is an apocalyptic number.

63678484738 is a deficient number, since it is larger than the sum of its proper divisors (41478649982).

63678484738 is a wasteful number, since it uses less digits than its factorization.

63678484738 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 26554953.

The product of its digits is 130056192, while the sum is 64.

The spelling of 63678484738 in words is "sixty-three billion, six hundred seventy-eight million, four hundred eighty-four thousand, seven hundred thirty-eight".