63155683172 has 24 divisors (see below), whose sum is σ = 115433445120. Its totient is φ = 30203629920.

The previous prime is 63155683153. The next prime is 63155683181. The reversal of 63155683172 is 27138655136.

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, 3607604 + ... + 3625067.

It is an arithmetic number, because the mean of its divisors is an integer number (4809726880).

Almost surely, 2^63155683172 is an apocalyptic number.

It is an amenable number.

63155683172 is a deficient number, since it is larger than the sum of its proper divisors (52277761948).

63155683172 is a wasteful number, since it uses less digits than its factorization.

63155683172 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 7232771 (or 7232769 counting only the distinct ones).

The product of its digits is 907200, while the sum is 47.

The spelling of 63155683172 in words is "sixty-three billion, one hundred fifty-five million, six hundred eighty-three thousand, one hundred seventy-two".