8138798598564 has 72 divisors (see below), whose sum is σ = 21365133491520. Its totient is φ = 2709106215264.

The previous prime is 8138798598533. The next prime is 8138798598589. The reversal of 8138798598564 is 4658958978318.

8138798598564 is a `hidden beast` number, since 8 + 1 + 387 + 98 + 5 + 98 + 5 + 64 = 666.

It is a Harshad number since it is a multiple of its sum of digits (81).

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, 5215824 + ... + 6594119.

It is an arithmetic number, because the mean of its divisors is an integer number (296737965160).

Almost surely, 2^{8138798598564} is an apocalyptic number.

It is an amenable number.

8138798598564 is an abundant number, since it is smaller than the sum of its proper divisors (13226334892956).

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

8138798598564 is a wasteful number, since it uses less digits than its factorization.

8138798598564 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 11810671 (or 11810657 counting only the distinct ones).

The product of its digits is 4180377600, while the sum is 81.

The spelling of 8138798598564 in words is "eight trillion, one hundred thirty-eight billion, seven hundred ninety-eight million, five hundred ninety-eight thousand, five hundred sixty-four".