20431506572 has 12 divisors (see below), whose sum is σ = 36429762096. Its totient is φ = 10023003120.

The previous prime is 20431506551. The next prime is 20431506577. The reversal of 20431506572 is 27560513402.

It is not an unprimeable number, because it can be changed into a prime (20431506577) 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, 48187304 + ... + 48187727.

It is an arithmetic number, because the mean of its divisors is an integer number (3035813508).

Almost surely, 2^20431506572 is an apocalyptic number.

It is an amenable number.

20431506572 is a deficient number, since it is larger than the sum of its proper divisors (15998255524).

20431506572 is a wasteful number, since it uses less digits than its factorization.

20431506572 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 96375088 (or 96375086 counting only the distinct ones).

The product of its (nonzero) digits is 50400, while the sum is 35.

The spelling of 20431506572 in words is "twenty billion, four hundred thirty-one million, five hundred six thousand, five hundred seventy-two".