21622140643692 has 24 divisors (see below), whose sum is σ = 50469660746176. Its totient is φ = 7204808893968.

The previous prime is 21622140643687. The next prime is 21622140643709. The reversal of 21622140643692 is 29634604122612.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 321380038 + ... + 321447309.

Almost surely, 2^{21622140643692} is an apocalyptic number.

It is an amenable number.

21622140643692 is an abundant number, since it is smaller than the sum of its proper divisors (28847520102484).

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

21622140643692 is a wasteful number, since it uses less digits than its factorization.

21622140643692 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 642830157 (or 642830155 counting only the distinct ones).

The product of its (nonzero) digits is 1492992, while the sum is 48.

The spelling of 21622140643692 in words is "twenty-one trillion, six hundred twenty-two billion, one hundred forty million, six hundred forty-three thousand, six hundred ninety-two".