21739905060 has 48 divisors (see below), whose sum is σ = 62835343872. Its totient is φ = 5610297600.

The previous prime is 21739905059. The next prime is 21739905097. The reversal of 21739905060 is 6050993712.

It is a hoax number, since the sum of its digits (42) coincides with the sum of the digits of its distinct prime factors.

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, 5842201 + ... + 5845920.

It is an arithmetic number, because the mean of its divisors is an integer number (1309069664).

Almost surely, 2^21739905060 is an apocalyptic number.

21739905060 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

21739905060 is an abundant number, since it is smaller than the sum of its proper divisors (41095438812).

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

21739905060 is a wasteful number, since it uses less digits than its factorization.

21739905060 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 11688164 (or 11688162 counting only the distinct ones).

The product of its (nonzero) digits is 102060, while the sum is 42.

The spelling of 21739905060 in words is "twenty-one billion, seven hundred thirty-nine million, nine hundred five thousand, sixty".