172412045772 has 48 divisors (see below), whose sum is σ = 408375327360. Its totient is φ = 56602351872.

The previous prime is 172412045749. The next prime is 172412045803. The reversal of 172412045772 is 277540214271.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 5111908 + ... + 5145524.

It is an arithmetic number, because the mean of its divisors is an integer number (8507819320).

Almost surely, 2^172412045772 is an apocalyptic number.

172412045772 is a gapful number since it is divisible by the number (12) formed by its first and last digit.

It is an amenable number.

172412045772 is an abundant number, since it is smaller than the sum of its proper divisors (235963281588).

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

172412045772 is a wasteful number, since it uses less digits than its factorization.

172412045772 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 40070 (or 40068 counting only the distinct ones).

The product of its (nonzero) digits is 219520, while the sum is 42.

The spelling of 172412045772 in words is "one hundred seventy-two billion, four hundred twelve million, forty-five thousand, seven hundred seventy-two".