172681144502 has 8 divisors (see below), whose sum is σ = 261586288512. Its totient is φ = 85485715000.

The previous prime is 172681144459. The next prime is 172681144513. The reversal of 172681144502 is 205441186271.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a self number, because there is not a number n which added to its sum of digits gives 172681144502.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 427428374 + ... + 427428777.

It is an arithmetic number, because the mean of its divisors is an integer number (32698286064).

Almost surely, 2^172681144502 is an apocalyptic number.

172681144502 is a deficient number, since it is larger than the sum of its proper divisors (88905144010).

172681144502 is a wasteful number, since it uses less digits than its factorization.

172681144502 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 854857254.

The product of its (nonzero) digits is 107520, while the sum is 41.

The spelling of 172681144502 in words is "one hundred seventy-two billion, six hundred eighty-one million, one hundred forty-four thousand, five hundred two".