138013000776 has 96 divisors (see below), whose sum is σ = 429351848640. Its totient is φ = 39232093824.

The previous prime is 138013000747. The next prime is 138013000813. The reversal of 138013000776 is 677000310831.

It is a Harshad number since it is a multiple of its sum of digits (36).

It is a self number, because there is not a number n which added to its sum of digits gives 138013000776.

It is an unprimeable number.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 595726 + ... + 794301.

It is an arithmetic number, because the mean of its divisors is an integer number (4472415090).

Almost surely, 2^138013000776 is an apocalyptic number.

138013000776 is the 198576-th nonagonal number.

It is an amenable number.

138013000776 is an abundant number, since it is smaller than the sum of its proper divisors (291338847864).

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

138013000776 is a wasteful number, since it uses less digits than its factorization.

138013000776 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1390243 (or 1390236 counting only the distinct ones).

The product of its (nonzero) digits is 21168, while the sum is 36.

The spelling of 138013000776 in words is "one hundred thirty-eight billion, thirteen million, seven hundred seventy-six", and thus it is an aban number.