21608254928050 has 144 divisors (see below), whose sum is σ = 49079375504640. Its totient is φ = 7048039824000.

The previous prime is 21608254928023. The next prime is 21608254928087. The reversal of 21608254928050 is 5082945280612.

It is a super-2 number, since 2×21608254928050² (a number of 27 digits) contains 22 as substring.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 71 ways as a sum of consecutive naturals, for example, 2069980 + ... + 6892120.

It is an arithmetic number, because the mean of its divisors is an integer number (340828996560).

Almost surely, 2^{21608254928050} is an apocalyptic number.

21608254928050 is an abundant number, since it is smaller than the sum of its proper divisors (27471120576590).

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

21608254928050 is a wasteful number, since it uses less digits than its factorization.

21608254928050 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4822257 (or 4822245 counting only the distinct ones).

The product of its (nonzero) digits is 2764800, while the sum is 52.

The spelling of 21608254928050 in words is "twenty-one trillion, six hundred eight billion, two hundred fifty-four million, nine hundred twenty-eight thousand, fifty".