172717400287 has 8 divisors (see below), whose sum is σ = 174046504176. Its totient is φ = 171389287872.

The previous prime is 172717400221. The next prime is 172717400299. The reversal of 172717400287 is 782004717271.

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

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-172717400287 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (172717400087) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 103788 + ... + 596830.

It is an arithmetic number, because the mean of its divisors is an integer number (21755813022).

Almost surely, 2^172717400287 is an apocalyptic number.

172717400287 is a deficient number, since it is larger than the sum of its proper divisors (1329103889).

172717400287 is a wasteful number, since it uses less digits than its factorization.

172717400287 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 495737.

The product of its (nonzero) digits is 307328, while the sum is 46.

The spelling of 172717400287 in words is "one hundred seventy-two billion, seven hundred seventeen million, four hundred thousand, two hundred eighty-seven".