166120265143632 has 80 divisors (see below), whose sum is σ = 433401974908992. Its totient is φ = 54824030745600.

The previous prime is 166120265143529. The next prime is 166120265143699. The reversal of 166120265143632 is 236341562021661.

It is a Harshad number since it is a multiple of its sum of digits (48).

It is a congruent number.

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, 251315068 + ... + 251975204.

Almost surely, 2^{166120265143632} is an apocalyptic number.

166120265143632 is a gapful number since it is divisible by the number (12) formed by its first and last digit.

It is an amenable number.

166120265143632 is an abundant number, since it is smaller than the sum of its proper divisors (267281709765360).

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

166120265143632 is a wasteful number, since it uses less digits than its factorization.

166120265143632 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 712156 (or 712150 counting only the distinct ones).

The product of its (nonzero) digits is 1866240, while the sum is 48.

The spelling of 166120265143632 in words is "one hundred sixty-six trillion, one hundred twenty billion, two hundred sixty-five million, one hundred forty-three thousand, six hundred thirty-two".