166725163456272 has 100 divisors (see below), whose sum is σ = 493773110226000. Its totient is φ = 54282611339712.

The previous prime is 166725163456237. The next prime is 166725163456349. The reversal of 166725163456272 is 272654361527661.

It is a happy number.

166725163456272 is a `hidden beast` number, since 1 + 6 + 6 + 7 + 2 + 5 + 1 + 63 + 4 + 562 + 7 + 2 = 666.

It is a super-2 number, since 2×166725163456272² (a number of 29 digits) contains 22 as substring.

It is an unprimeable number.

It is a polite number, since it can be written in 19 ways as a sum of consecutive naturals, for example, 1495827522 + ... + 1495938977.

It is an arithmetic number, because the mean of its divisors is an integer number (4937731102260).

Almost surely, 2^{166725163456272} is an apocalyptic number.

166725163456272 is a gapful number since it is divisible by the number (12) formed by its first and last digit.

It is an amenable number.

166725163456272 is an abundant number, since it is smaller than the sum of its proper divisors (327047946769728).

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

166725163456272 is a wasteful number, since it uses less digits than its factorization.

166725163456272 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2991766562 (or 2991766547 counting only the distinct ones).

The product of its digits is 152409600, while the sum is 63.

The spelling of 166725163456272 in words is "one hundred sixty-six trillion, seven hundred twenty-five billion, one hundred sixty-three million, four hundred fifty-six thousand, two hundred seventy-two".