15799805500 has 24 divisors (see below), whose sum is σ = 34506776304. Its totient is φ = 6319922000.

The previous prime is 15799805473. The next prime is 15799805537. The reversal of 15799805500 is 550899751.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 15799306 + ... + 15800305.

It is an arithmetic number, because the mean of its divisors is an integer number (1437782346).

Almost surely, 2^15799805500 is an apocalyptic number.

15799805500 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

15799805500 is an abundant number, since it is smaller than the sum of its proper divisors (18706970804).

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

15799805500 is a wasteful number, since it uses less digits than its factorization.

15799805500 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 31599630 (or 31599618 counting only the distinct ones).

The product of its (nonzero) digits is 567000, while the sum is 49.

The spelling of 15799805500 in words is "fifteen billion, seven hundred ninety-nine million, eight hundred five thousand, five hundred".