166630252066432 has 128 divisors (see below), whose sum is σ = 420885350899200. Its totient is φ = 63820523351040.

The previous prime is 166630252066427. The next prime is 166630252066451. The reversal of 166630252066432 is 234660252036661.

It is a tau number, because it is divible by the number of its divisors (128).

It is a super-2 number, since 2×166630252066432² (a number of 29 digits) contains 22 as substring.

It is a self number, because there is not a number n which added to its sum of digits gives 166630252066432.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 142693738 + ... + 143856745.

It is an arithmetic number, because the mean of its divisors is an integer number (3288166803900).

Almost surely, 2^{166630252066432} is an apocalyptic number.

It is an amenable number.

166630252066432 is an abundant number, since it is smaller than the sum of its proper divisors (254255098832768).

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

166630252066432 is a wasteful number, since it uses less digits than its factorization.

166630252066432 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 286550574 (or 286550562 counting only the distinct ones).

The product of its (nonzero) digits is 11197440, while the sum is 52.

The spelling of 166630252066432 in words is "one hundred sixty-six trillion, six hundred thirty billion, two hundred fifty-two million, sixty-six thousand, four hundred thirty-two".