172545239400 has 48 divisors (see below), whose sum is σ = 534890244000. Its totient is φ = 46012063680.

The previous prime is 172545239357. The next prime is 172545239431. The reversal of 172545239400 is 4932545271.

It is a happy number.

172545239400 is digitally balanced in base 2 and base 3, because in such bases 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 11 ways as a sum of consecutive naturals, for example, 143787100 + ... + 143788299.

It is an arithmetic number, because the mean of its divisors is an integer number (11143546750).

Almost surely, 2^172545239400 is an apocalyptic number.

172545239400 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

172545239400 is an abundant number, since it is smaller than the sum of its proper divisors (362345004600).

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

172545239400 is a wasteful number, since it uses less digits than its factorization.

172545239400 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 287575418 (or 287575409 counting only the distinct ones).

The product of its (nonzero) digits is 302400, while the sum is 42.

The spelling of 172545239400 in words is "one hundred seventy-two billion, five hundred forty-five million, two hundred thirty-nine thousand, four hundred".