20172463752 has 64 divisors (see below), whose sum is σ = 58975994880. Its totient is φ = 5629522752.

The previous prime is 20172463741. The next prime is 20172463769. The reversal of 20172463752 is 25736427102.

It is a self number, because there is not a number n which added to its sum of digits gives 20172463752.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 1388988 + ... + 1403435.

It is an arithmetic number, because the mean of its divisors is an integer number (921499920).

Almost surely, 2^20172463752 is an apocalyptic number.

It is an amenable number.

20172463752 is an abundant number, since it is smaller than the sum of its proper divisors (38803531128).

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

20172463752 is a wasteful number, since it uses less digits than its factorization.

20172463752 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2792482 (or 2792478 counting only the distinct ones).

The product of its (nonzero) digits is 141120, while the sum is 39.

The spelling of 20172463752 in words is "twenty billion, one hundred seventy-two million, four hundred sixty-three thousand, seven hundred fifty-two".