172066515716663 has 8 divisors (see below), whose sum is σ = 183348509069232. Its totient is φ = 160913459431296.

The previous prime is 172066515716659. The next prime is 172066515716707. The reversal of 172066515716663 is 366617515660271.

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

It is a cyclic number.

It is not a de Polignac number, because 172066515716663 - 2² = 172066515716659 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 172066515716596 and 172066515716605.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (172066515116663) 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, 32234264045 + ... + 32234269382.

It is an arithmetic number, because the mean of its divisors is an integer number (22918563633654).

Almost surely, 2^{172066515716663} is an apocalyptic number.

172066515716663 is a deficient number, since it is larger than the sum of its proper divisors (11281993352569).

172066515716663 is a wasteful number, since it uses less digits than its factorization.

172066515716663 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 64468533601.

The product of its (nonzero) digits is 57153600, while the sum is 62.

The spelling of 172066515716663 in words is "one hundred seventy-two trillion, sixty-six billion, five hundred fifteen million, seven hundred sixteen thousand, six hundred sixty-three".