20922670664 has 16 divisors (see below), whose sum is σ = 44834294400. Its totient is φ = 8966858832.

The previous prime is 20922670621. The next prime is 20922670669. The reversal of 20922670664 is 46607622902.

It is not an unprimeable number, because it can be changed into a prime (20922670669) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 186809504 + ... + 186809615.

It is an arithmetic number, because the mean of its divisors is an integer number (2802143400).

Almost surely, 2^20922670664 is an apocalyptic number.

It is an amenable number.

20922670664 is an abundant number, since it is smaller than the sum of its proper divisors (23911623736).

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

20922670664 is a wasteful number, since it uses less digits than its factorization.

20922670664 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 373619132 (or 373619128 counting only the distinct ones).

The product of its (nonzero) digits is 435456, while the sum is 44.

The spelling of 20922670664 in words is "twenty billion, nine hundred twenty-two million, six hundred seventy thousand, six hundred sixty-four".