21592623340 has 24 divisors (see below), whose sum is σ = 47731062960. Its totient is φ = 8182467648.

The previous prime is 21592623331. The next prime is 21592623383. The reversal of 21592623340 is 4332629512.

It is a super-2 number, since 2×21592623340² (a number of 21 digits) contains 22 as substring.

It is a self number, because there is not a number n which added to its sum of digits gives 21592623340.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 28410967 + ... + 28411726.

It is an arithmetic number, because the mean of its divisors is an integer number (1988794290).

Almost surely, 2^21592623340 is an apocalyptic number.

21592623340 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

21592623340 is an abundant number, since it is smaller than the sum of its proper divisors (26138439620).

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

21592623340 is a wasteful number, since it uses less digits than its factorization.

21592623340 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 56822721 (or 56822719 counting only the distinct ones).

The product of its (nonzero) digits is 77760, while the sum is 37.

The spelling of 21592623340 in words is "twenty-one billion, five hundred ninety-two million, six hundred twenty-three thousand, three hundred forty".