172247621567660 has 24 divisors (see below), whose sum is σ = 362167125233760. Its totient is φ = 68813882923904.

The previous prime is 172247621567653. The next prime is 172247621567729. The reversal of 172247621567660 is 66765126742271.

It is a junction number, because it is equal to n+sod(n) for n = 172247621567593 and 172247621567602.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 5322839864 + ... + 5322872223.

It is an arithmetic number, because the mean of its divisors is an integer number (15090296884740).

Almost surely, 2^{172247621567660} is an apocalyptic number.

172247621567660 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

172247621567660 is an abundant number, since it is smaller than the sum of its proper divisors (189919503666100).

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

172247621567660 is a wasteful number, since it uses less digits than its factorization.

172247621567660 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 10645712905 (or 10645712903 counting only the distinct ones).

The product of its (nonzero) digits is 71124480, while the sum is 62.

The spelling of 172247621567660 in words is "one hundred seventy-two trillion, two hundred forty-seven billion, six hundred twenty-one million, five hundred sixty-seven thousand, six hundred sixty".