21616221411650 has 48 divisors (see below), whose sum is σ = 42459739527744. Its totient is φ = 8170909010880.

The previous prime is 21616221411637. The next prime is 21616221411691. The reversal of 21616221411650 is 5611412261612.

It is a super-2 number, since 2×21616221411650² (a number of 27 digits) contains 22 as substring.

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, 113137769 + ... + 113328668.

It is an arithmetic number, because the mean of its divisors is an integer number (884577906828).

Almost surely, 2^{21616221411650} is an apocalyptic number.

21616221411650 is a deficient number, since it is larger than the sum of its proper divisors (20843518116094).

21616221411650 is a wasteful number, since it uses less digits than its factorization.

21616221411650 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 226466555 (or 226466550 counting only the distinct ones).

The product of its (nonzero) digits is 34560, while the sum is 38.

The spelling of 21616221411650 in words is "twenty-one trillion, six hundred sixteen billion, two hundred twenty-one million, four hundred eleven thousand, six hundred fifty".