172053949788 has 36 divisors (see below), whose sum is σ = 497044744560. Its totient is φ = 49158271296.

The previous prime is 172053949637. The next prime is 172053949801. The reversal of 172053949788 is 887949350271.

172053949788 is a `hidden beast` number, since 1 + 7 + 2 + 0 + 539 + 4 + 97 + 8 + 8 = 666.

172053949788 is digitally balanced in base 3, because in such base it contains all the possibile digits an equal number of times.

It is a tau number, because it is divible by the number of its divisors (36).

It is a Harshad number since it is a multiple of its sum of digits (63).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 341376633 + ... + 341377136.

It is an arithmetic number, because the mean of its divisors is an integer number (13806798460).

Almost surely, 2^172053949788 is an apocalyptic number.

172053949788 is a gapful number since it is divisible by the number (18) formed by its first and last digit.

It is an amenable number.

172053949788 is an abundant number, since it is smaller than the sum of its proper divisors (324990794772).

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

172053949788 is a wasteful number, since it uses less digits than its factorization.

172053949788 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 682753786 (or 682753781 counting only the distinct ones).

The product of its (nonzero) digits is 30481920, while the sum is 63.

The spelling of 172053949788 in words is "one hundred seventy-two billion, fifty-three million, nine hundred forty-nine thousand, seven hundred eighty-eight".