20664622204204 has 48 divisors (see below), whose sum is σ = 41771771780256. Its totient is φ = 8840373555200.

The previous prime is 20664622204181. The next prime is 20664622204211. The reversal of 20664622204204 is 40240222646602.

It is a happy number.

It is a super-2 number, since 2×20664622204204² (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 15 ways as a sum of consecutive naturals, for example, 117672144 + ... + 117847624.

It is an arithmetic number, because the mean of its divisors is an integer number (870245245422).

Almost surely, 2^{20664622204204} is an apocalyptic number.

It is an amenable number.

20664622204204 is an abundant number, since it is smaller than the sum of its proper divisors (21107149576052).

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

20664622204204 is a wasteful number, since it uses less digits than its factorization.

20664622204204 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 332946 (or 332944 counting only the distinct ones).

The product of its (nonzero) digits is 442368, while the sum is 40.

The spelling of 20664622204204 in words is "twenty trillion, six hundred sixty-four billion, six hundred twenty-two million, two hundred four thousand, two hundred four".