20616672272 has 40 divisors (see below), whose sum is σ = 45957624000. Its totient is φ = 8776409472.

The previous prime is 20616672239. The next prime is 20616672277. The reversal of 20616672272 is 27227661602.

It is not an unprimeable number, because it can be changed into a prime (20616672277) 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, 601022 + ... + 634397.

It is an arithmetic number, because the mean of its divisors is an integer number (1148940600).

Almost surely, 2^20616672272 is an apocalyptic number.

It is an amenable number.

20616672272 is an abundant number, since it is smaller than the sum of its proper divisors (25340951728).

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

20616672272 is a wasteful number, since it uses less digits than its factorization.

20616672272 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1235583 (or 1235577 counting only the distinct ones).

The product of its (nonzero) digits is 169344, while the sum is 41.

The spelling of 20616672272 in words is "twenty billion, six hundred sixteen million, six hundred seventy-two thousand, two hundred seventy-two".