172152166620 has 96 divisors (see below), whose sum is σ = 565775820288. Its totient is φ = 38285574912.

The previous prime is 172152166567. The next prime is 172152166643. The reversal of 172152166620 is 26661251271.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 5523462 + ... + 5554541.

It is an arithmetic number, because the mean of its divisors is an integer number (5893498128).

Almost surely, 2^172152166620 is an apocalyptic number.

172152166620 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

172152166620 is an abundant number, since it is smaller than the sum of its proper divisors (393623653668).

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

172152166620 is a wasteful number, since it uses less digits than its factorization.

172152166620 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 11078059 (or 11078057 counting only the distinct ones).

The product of its (nonzero) digits is 60480, while the sum is 39.

The spelling of 172152166620 in words is "one hundred seventy-two billion, one hundred fifty-two million, one hundred sixty-six thousand, six hundred twenty".