172385888780 has 24 divisors (see below), whose sum is σ = 413726133408. Its totient is φ = 59103733248.

The previous prime is 172385888737. The next prime is 172385888791. The reversal of 172385888780 is 87888583271.

172385888780 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 615663749 + ... + 615664028.

It is an arithmetic number, because the mean of its divisors is an integer number (17238588892).

Almost surely, 2^172385888780 is an apocalyptic number.

172385888780 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

172385888780 is an abundant number, since it is smaller than the sum of its proper divisors (241340244628).

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

172385888780 is a wasteful number, since it uses less digits than its factorization.

172385888780 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1231327793 (or 1231327791 counting only the distinct ones).

The product of its (nonzero) digits is 48168960, while the sum is 65.

The spelling of 172385888780 in words is "one hundred seventy-two billion, three hundred eighty-five million, eight hundred eighty-eight thousand, seven hundred eighty".