172356808653271 has 12 divisors (see below), whose sum is σ = 189859225301536. Its totient is φ = 156349588792320.

The previous prime is 172356808653241. The next prime is 172356808653299.

It is a happy number.

172356808653271 is nontrivially palindromic in base 10.

It is not a de Polignac number, because 172356808653271 - 2⁷ = 172356808653143 is a prime.

It is a super-3 number, since 3×172356808653271³ (a number of 44 digits) contains 333 as substring.

It is a hoax number, since the sum of its digits (64) coincides with the sum of the digits of its distinct prime factors.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (172356808653241) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 1538212266 + ... + 1538324311.

Almost surely, 2^{172356808653271} is an apocalyptic number.

172356808653271 is a gapful number since it is divisible by the number (11) formed by its first and last digit.

172356808653271 is a deficient number, since it is larger than the sum of its proper divisors (17502416648265).

172356808653271 is a wasteful number, since it uses less digits than its factorization.

172356808653271 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3076537062 (or 3076537051 counting only the distinct ones).

The product of its (nonzero) digits is 101606400, while the sum is 64.

The spelling of 172356808653271 in words is "one hundred seventy-two trillion, three hundred fifty-six billion, eight hundred eight million, six hundred fifty-three thousand, two hundred seventy-one".