38973139578 has 16 divisors (see below), whose sum is σ = 86606976960. Its totient is φ = 12991046508.

The previous prime is 38973139577. The next prime is 38973139609. The reversal of 38973139578 is 87593137983.

38973139578 is a `hidden beast` number, since 389 + 73 + 139 + 57 + 8 = 666.

It is not an unprimeable number, because it can be changed into a prime (38973139571) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 360862350 + ... + 360862457.

It is an arithmetic number, because the mean of its divisors is an integer number (5412936060).

Almost surely, 2^38973139578 is an apocalyptic number.

38973139578 is an abundant number, since it is smaller than the sum of its proper divisors (47633837382).

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

38973139578 is a wasteful number, since it uses less digits than its factorization.

38973139578 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 721724818 (or 721724812 counting only the distinct ones).

The product of its digits is 34292160, while the sum is 63.

The spelling of 38973139578 in words is "thirty-eight billion, nine hundred seventy-three million, one hundred thirty-nine thousand, five hundred seventy-eight".