20664622262444 has 12 divisors (see below), whose sum is σ = 36278625986904. Its totient is φ = 10299300551904.

The previous prime is 20664622262419. The next prime is 20664622262489. The reversal of 20664622262444 is 44426222646602.

It is a super-2 number, since 2×20664622262444² (a number of 27 digits) contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 20664622262392 and 20664622262401.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 8252643422 + ... + 8252645925.

It is an arithmetic number, because the mean of its divisors is an integer number (3023218832242).

Almost surely, 2^{20664622262444} is an apocalyptic number.

It is an amenable number.

20664622262444 is a deficient number, since it is larger than the sum of its proper divisors (15614003724460).

20664622262444 is a wasteful number, since it uses less digits than its factorization.

20664622262444 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 16505289664 (or 16505289662 counting only the distinct ones).

The product of its (nonzero) digits is 10616832, while the sum is 50.

The spelling of 20664622262444 in words is "twenty trillion, six hundred sixty-four billion, six hundred twenty-two million, two hundred sixty-two thousand, four hundred forty-four".