20539612196 has 12 divisors (see below), whose sum is σ = 35945333760. Its totient is φ = 10269516840.

The previous prime is 20539612187. The next prime is 20539612201. The reversal of 20539612196 is 69121693502.

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, 209345 + ... + 291383.

It is an arithmetic number, because the mean of its divisors is an integer number (2995444480).

Almost surely, 2^20539612196 is an apocalyptic number.

It is an amenable number.

20539612196 is a deficient number, since it is larger than the sum of its proper divisors (15405721564).

20539612196 is a wasteful number, since it uses less digits than its factorization.

20539612196 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 144634 (or 144632 counting only the distinct ones).

The product of its (nonzero) digits is 174960, while the sum is 44.

The spelling of 20539612196 in words is "twenty billion, five hundred thirty-nine million, six hundred twelve thousand, one hundred ninety-six".