20263115172 has 24 divisors (see below), whose sum is σ = 47302869600. Its totient is φ = 6751190656.

The previous prime is 20263115143. The next prime is 20263115179. The reversal of 20263115172 is 27151136202.

It is not an unprimeable number, because it can be changed into a prime (20263115179) 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, 371022 + ... + 422117.

It is an arithmetic number, because the mean of its divisors is an integer number (1970952900).

Almost surely, 2^20263115172 is an apocalyptic number.

It is an amenable number.

20263115172 is an abundant number, since it is smaller than the sum of its proper divisors (27039754428).

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

20263115172 is a wasteful number, since it uses less digits than its factorization.

20263115172 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 795275 (or 795273 counting only the distinct ones).

The product of its (nonzero) digits is 5040, while the sum is 30.

The spelling of 20263115172 in words is "twenty billion, two hundred sixty-three million, one hundred fifteen thousand, one hundred seventy-two".