21616414654560 has 96 divisors (see below), whose sum is σ = 74281861285632. Its totient is φ = 5240342945280.

The previous prime is 21616414654547. The next prime is 21616414654579. The reversal of 21616414654560 is 6545641461612.

It is a tau number, because it is divible by the number of its divisors (96).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 2047003684 + ... + 2047014243.

It is an arithmetic number, because the mean of its divisors is an integer number (773769388392).

Almost surely, 2^{21616414654560} is an apocalyptic number.

21616414654560 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

21616414654560 is an abundant number, since it is smaller than the sum of its proper divisors (52665446631072).

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

21616414654560 is a wasteful number, since it uses less digits than its factorization.

21616414654560 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4094017956 (or 4094017948 counting only the distinct ones).

The product of its (nonzero) digits is 4147200, while the sum is 51.

The spelling of 21616414654560 in words is "twenty-one trillion, six hundred sixteen billion, four hundred fourteen million, six hundred fifty-four thousand, five hundred sixty".