20372556164 has 24 divisors (see below), whose sum is σ = 35844216576. Its totient is φ = 10131480000.

The previous prime is 20372556163. The next prime is 20372556187. The reversal of 20372556164 is 46165527302.

It is not an unprimeable number, because it can be changed into a prime (20372556163) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 635849 + ... + 667119.

It is an arithmetic number, because the mean of its divisors is an integer number (1493509024).

Almost surely, 2^20372556164 is an apocalyptic number.

It is an amenable number.

20372556164 is a deficient number, since it is larger than the sum of its proper divisors (15471660412).

20372556164 is a wasteful number, since it uses less digits than its factorization.

20372556164 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 32147 (or 32145 counting only the distinct ones).

The product of its (nonzero) digits is 302400, while the sum is 41.

The spelling of 20372556164 in words is "twenty billion, three hundred seventy-two million, five hundred fifty-six thousand, one hundred sixty-four".