15798876890844 has 12 divisors (see below), whose sum is σ = 36864046078664. Its totient is φ = 5266292296944.

The previous prime is 15798876890827. The next prime is 15798876890857. The reversal of 15798876890844 is 44809867889751.

It is a tau number, because it is divible by the number of its divisors (12).

It is a super-2 number, since 2×15798876890844² (a number of 27 digits) contains 22 as substring.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 658286537107 + ... + 658286537130.

Almost surely, 2^{15798876890844} is an apocalyptic number.

It is an amenable number.

15798876890844 is an abundant number, since it is smaller than the sum of its proper divisors (21065169187820).

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

15798876890844 is a wasteful number, since it uses less digits than its factorization.

15798876890844 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1316573074244 (or 1316573074242 counting only the distinct ones).

The product of its (nonzero) digits is 7803371520, while the sum is 84.

The spelling of 15798876890844 in words is "fifteen trillion, seven hundred ninety-eight billion, eight hundred seventy-six million, eight hundred ninety thousand, eight hundred forty-four".