478968137538 has 32 divisors (see below), whose sum is σ = 1054787961600. Its totient is φ = 143785391760.

The previous prime is 478968137519. The next prime is 478968137587. The reversal of 478968137538 is 835731869874.

478968137538 is digitally balanced in base 4, because in such base it contains all the possibile digits an equal number of times.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 33904588 + ... + 33918711.

It is an arithmetic number, because the mean of its divisors is an integer number (32962123800).

Almost surely, 2^478968137538 is an apocalyptic number.

478968137538 is an abundant number, since it is smaller than the sum of its proper divisors (575819824062).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

478968137538 is a wasteful number, since it uses less digits than its factorization.

478968137538 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 67823422.

The product of its digits is 243855360, while the sum is 69.

The spelling of 478968137538 in words is "four hundred seventy-eight billion, nine hundred sixty-eight million, one hundred thirty-seven thousand, five hundred thirty-eight".