20272047136 has 24 divisors (see below), whose sum is σ = 43538829264. Its totient is φ = 9214566720.

The previous prime is 20272047113. The next prime is 20272047163. The reversal of 20272047136 is 63174027202.

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, 28795170 + ... + 28795873.

It is an arithmetic number, because the mean of its divisors is an integer number (1814117886).

Almost surely, 2^20272047136 is an apocalyptic number.

It is an amenable number.

20272047136 is an abundant number, since it is smaller than the sum of its proper divisors (23266782128).

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

20272047136 is a wasteful number, since it uses less digits than its factorization.

20272047136 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 57591064 (or 57591056 counting only the distinct ones).

The product of its (nonzero) digits is 28224, while the sum is 34.

The spelling of 20272047136 in words is "twenty billion, two hundred seventy-two million, forty-seven thousand, one hundred thirty-six".