172904045472 has 96 divisors (see below), whose sum is σ = 506565480960. Its totient is φ = 57376166400.

The previous prime is 172904045467. The next prime is 172904045473. The reversal of 172904045472 is 274540409271.

172904045472 is a `hidden beast` number, since 1 + 7 + 2 + 90 + 40 + 454 + 72 = 666.

It is a tau number, because it is divible by the number of its divisors (96).

It is not an unprimeable number, because it can be changed into a prime (172904045473) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 256029 + ... + 641372.

It is an arithmetic number, because the mean of its divisors is an integer number (5276723760).

Almost surely, 2^172904045472 is an apocalyptic number.

172904045472 is a gapful number since it is divisible by the number (12) formed by its first and last digit.

It is an amenable number.

172904045472 is an abundant number, since it is smaller than the sum of its proper divisors (333661435488).

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

172904045472 is a wasteful number, since it uses less digits than its factorization.

172904045472 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 897643 (or 897629 counting only the distinct ones).

The product of its (nonzero) digits is 564480, while the sum is 45.

The spelling of 172904045472 in words is "one hundred seventy-two billion, nine hundred four million, forty-five thousand, four hundred seventy-two".