20344316172 has 24 divisors (see below), whose sum is σ = 47913719616. Its totient is φ = 6718060368.

The previous prime is 20344316159. The next prime is 20344316189. The reversal of 20344316172 is 27161344302.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 7920958 + ... + 7923525.

It is an arithmetic number, because the mean of its divisors is an integer number (1996404984).

Almost surely, 2^20344316172 is an apocalyptic number.

It is an amenable number.

20344316172 is an abundant number, since it is smaller than the sum of its proper divisors (27569403444).

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

20344316172 is a wasteful number, since it uses less digits than its factorization.

20344316172 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 15844597 (or 15844595 counting only the distinct ones).

The product of its (nonzero) digits is 24192, while the sum is 33.

The spelling of 20344316172 in words is "twenty billion, three hundred forty-four million, three hundred sixteen thousand, one hundred seventy-two".