172487109312 has 672 divisors, whose sum is σ = 610438809600. Its totient is φ = 47593598976.

The previous prime is 172487109251. The next prime is 172487109371. The reversal of 172487109312 is 213901784271.

172487109312 is a `hidden beast` number, since 1 + 72 + 487 + 1 + 0 + 93 + 12 = 666.

It is a tau number, because it is divible by the number of its divisors (672).

It is a super-2 number, since 2×172487109312² (a number of 23 digits) contains 22 as substring.

It is an unprimeable number.

It is a polite number, since it can be written in 95 ways as a sum of consecutive naturals, for example, 354182733 + ... + 354183219.

Almost surely, 2^172487109312 is an apocalyptic number.

172487109312 is a gapful number since it is divisible by the number (12) 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 172487109312, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (305219404800).

172487109312 is an abundant number, since it is smaller than the sum of its proper divisors (437951700288).

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

172487109312 is a wasteful number, since it uses less digits than its factorization.

172487109312 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 658 (or 635 counting only the distinct ones).

The product of its (nonzero) digits is 169344, while the sum is 45.

The spelling of 172487109312 in words is "one hundred seventy-two billion, four hundred eighty-seven million, one hundred nine thousand, three hundred twelve".