15996655600 has 60 divisors (see below), whose sum is σ = 38569004640. Its totient is φ = 6375846400.

The previous prime is 15996655561. The next prime is 15996655613. The reversal of 15996655600 is 655669951.

It is a super-2 number, since 2×15996655600² (a number of 21 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 11 ways as a sum of consecutive naturals, for example, 41241 + ... + 183559.

It is an arithmetic number, because the mean of its divisors is an integer number (642816744).

Almost surely, 2^15996655600 is an apocalyptic number.

15996655600 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 15996655600, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (19284502320).

15996655600 is an abundant number, since it is smaller than the sum of its proper divisors (22572349040).

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

15996655600 is a wasteful number, since it uses less digits than its factorization.

15996655600 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 142618 (or 142607 counting only the distinct ones).

The product of its (nonzero) digits is 2187000, while the sum is 52.

The spelling of 15996655600 in words is "fifteen billion, nine hundred ninety-six million, six hundred fifty-five thousand, six hundred".