172197608688 has 360 divisors, whose sum is σ = 582292797840. Its totient is φ = 47325358080.

The previous prime is 172197608641. The next prime is 172197608699. The reversal of 172197608688 is 886806791271.

172197608688 is a `hidden beast` number, since 1 + 7 + 2 + 19 + 7 + 608 + 6 + 8 + 8 = 666.

It is a Harshad number since it is a multiple of its sum of digits (63).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 71 ways as a sum of consecutive naturals, for example, 23231703 + ... + 23239113.

It is an arithmetic number, because the mean of its divisors is an integer number (1617479994).

Almost surely, 2^172197608688 is an apocalyptic number.

172197608688 is a gapful number since it is divisible by the number (18) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 172197608688, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (291146398920).

172197608688 is an abundant number, since it is smaller than the sum of its proper divisors (410095189152).

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

172197608688 is a wasteful number, since it uses less digits than its factorization.

172197608688 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 7565 (or 7549 counting only the distinct ones).

The product of its (nonzero) digits is 16257024, while the sum is 63.

The spelling of 172197608688 in words is "one hundred seventy-two billion, one hundred ninety-seven million, six hundred eight thousand, six hundred eighty-eight".