172827156568 has 48 divisors (see below), whose sum is σ = 363766767840. Its totient is φ = 76886335680.

The previous prime is 172827156553. The next prime is 172827156569. The reversal of 172827156568 is 865651728271.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (172827156569) 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, 1853871 + ... + 1944862.

It is an arithmetic number, because the mean of its divisors is an integer number (7578474330).

Almost surely, 2^172827156568 is an apocalyptic number.

It is an amenable number.

172827156568 is an abundant number, since it is smaller than the sum of its proper divisors (190939611272).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

172827156568 is a wasteful number, since it uses less digits than its factorization.

172827156568 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3798808 (or 3798793 counting only the distinct ones).

The product of its digits is 11289600, while the sum is 58.

The spelling of 172827156568 in words is "one hundred seventy-two billion, eight hundred twenty-seven million, one hundred fifty-six thousand, five hundred sixty-eight".