172453542272 has 64 divisors (see below), whose sum is σ = 396839172240. Its totient is φ = 73776906240.

The previous prime is 172453542263. The next prime is 172453542299. The reversal of 172453542272 is 272245354271.

It is a tau number, because it is divible by the number of its divisors (64).

It is a Harshad number since it is a multiple of its sum of digits (44).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 3578453 + ... + 3626324.

Almost surely, 2^172453542272 is an apocalyptic number.

It is an amenable number.

172453542272 is an abundant number, since it is smaller than the sum of its proper divisors (224385629968).

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

172453542272 is a wasteful number, since it uses less digits than its factorization.

172453542272 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 7204819 (or 7204807 counting only the distinct ones).

The product of its digits is 940800, while the sum is 44.

The spelling of 172453542272 in words is "one hundred seventy-two billion, four hundred fifty-three million, five hundred forty-two thousand, two hundred seventy-two".