15499820102004 has 72 divisors (see below), whose sum is σ = 44878335727680. Its totient is φ = 4418523338112.

The previous prime is 15499820101993. The next prime is 15499820102017. The reversal of 15499820102004 is 40020102899451.

It is a happy number.

15499820102004 is a `hidden beast` number, since 1 + 549 + 9 + 82 + 0 + 1 + 0 + 20 + 0 + 4 = 666.

It is a congruent number.

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, 69309609 + ... + 69532880.

It is an arithmetic number, because the mean of its divisors is an integer number (623310218440).

Almost surely, 2^{15499820102004} is an apocalyptic number.

15499820102004 is a gapful number since it is divisible by the number (14) formed by its first and last digit.

It is an amenable number.

15499820102004 is an abundant number, since it is smaller than the sum of its proper divisors (29378515625676).

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

15499820102004 is a wasteful number, since it uses less digits than its factorization.

15499820102004 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 138842949 (or 138842944 counting only the distinct ones).

The product of its (nonzero) digits is 207360, while the sum is 45.

The spelling of 15499820102004 in words is "fifteen trillion, four hundred ninety-nine billion, eight hundred twenty million, one hundred two thousand, four".