672447503172 has 96 divisors (see below), whose sum is σ = 1666228838400. Its totient is φ = 210615784192.

The previous prime is 672447503137. The next prime is 672447503179. The reversal of 672447503172 is 271305744276.

672447503172 is digitally balanced in base 2 and base 4, because in such bases it contains all the possibile digits an equal number of times.

It is a super-3 number, since 3×672447503172³ (a number of 36 digits) contains 333 as substring.

It is not an unprimeable number, because it can be changed into a prime (672447503179) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 23418328 + ... + 23447024.

It is an arithmetic number, because the mean of its divisors is an integer number (17356550400).

Almost surely, 2^672447503172 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 672447503172, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (833114419200).

672447503172 is an abundant number, since it is smaller than the sum of its proper divisors (993781335228).

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

672447503172 is a wasteful number, since it uses less digits than its factorization.

672447503172 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 30225 (or 30223 counting only the distinct ones).

The product of its (nonzero) digits is 1975680, while the sum is 48.

The spelling of 672447503172 in words is "six hundred seventy-two billion, four hundred forty-seven million, five hundred three thousand, one hundred seventy-two".