172166703836 has 12 divisors (see below), whose sum is σ = 302584830912. Its totient is φ = 85713895008.

The previous prime is 172166703829. The next prime is 172166703851. The reversal of 172166703836 is 638307661271.

It is a super-4 number, since 4×172166703836⁴ (a number of 46 digits) contains 4444 as substring. Note that it is a super-d number also for d = 2.

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, 92363180 + ... + 92365043.

It is an arithmetic number, because the mean of its divisors is an integer number (25215402576).

Almost surely, 2^172166703836 is an apocalyptic number.

It is an amenable number.

172166703836 is a deficient number, since it is larger than the sum of its proper divisors (130418127076).

172166703836 is a wasteful number, since it uses less digits than its factorization.

172166703836 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 184728460 (or 184728458 counting only the distinct ones).

The product of its (nonzero) digits is 1524096, while the sum is 50.

The spelling of 172166703836 in words is "one hundred seventy-two billion, one hundred sixty-six million, seven hundred three thousand, eight hundred thirty-six".