21616360112160 has 960 divisors, whose sum is σ = 86431067864064. Its totient is φ = 5041970841600.

The previous prime is 21616360112111. The next prime is 21616360112201. The reversal of 21616360112160 is 6121106361612.

21616360112160 is a `hidden beast` number, since 2 + 1 + 6 + 1 + 636 + 0 + 1 + 1 + 2 + 16 + 0 = 666.

It is a Harshad number since it is a multiple of its sum of digits (36).

It is an unprimeable number.

It is a polite number, since it can be written in 159 ways as a sum of consecutive naturals, for example, 410689045 + ... + 410741675.

Almost surely, 2^{21616360112160} is an apocalyptic number.

21616360112160 is a gapful number since it is divisible by the number (20) 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 21616360112160, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (43215533932032).

21616360112160 is an abundant number, since it is smaller than the sum of its proper divisors (64814707751904).

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

21616360112160 is a wasteful number, since it uses less digits than its factorization.

21616360112160 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 52779 (or 52762 counting only the distinct ones).

The product of its (nonzero) digits is 15552, while the sum is 36.

Adding to 21616360112160 its reverse (6121106361612), we get a palindrome (27737466473772).

The spelling of 21616360112160 in words is "twenty-one trillion, six hundred sixteen billion, three hundred sixty million, one hundred twelve thousand, one hundred sixty".