172400441350872 has 32 divisors (see below), whose sum is σ = 492572689574400. Its totient is φ = 49257268957344.

The previous prime is 172400441350871. The next prime is 172400441350883. The reversal of 172400441350872 is 278053144004271.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (172400441350871) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 513096551472 + ... + 513096551807.

It is an arithmetic number, because the mean of its divisors is an integer number (15392896549200).

Almost surely, 2^{172400441350872} is an apocalyptic number.

172400441350872 is a gapful number since it is divisible by the number (12) formed by its first and last digit.

It is an amenable number.

172400441350872 is an abundant number, since it is smaller than the sum of its proper divisors (320172248223528).

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

172400441350872 is a wasteful number, since it uses less digits than its factorization.

172400441350872 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1026193103295 (or 1026193103291 counting only the distinct ones).

The product of its (nonzero) digits is 1505280, while the sum is 48.

The spelling of 172400441350872 in words is "one hundred seventy-two trillion, four hundred billion, four hundred forty-one million, three hundred fifty thousand, eight hundred seventy-two".