166867375512 has 32 divisors (see below), whose sum is σ = 439124673600. Its totient is φ = 52694960544.

The previous prime is 166867375489. The next prime is 166867375547. The reversal of 166867375512 is 215573768661.

It is a Harshad number since it is a multiple of its sum of digits (57).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 182968158 + ... + 182969069.

It is an arithmetic number, because the mean of its divisors is an integer number (13722646050).

Almost surely, 2^166867375512 is an apocalyptic number.

166867375512 is a gapful number since it is divisible by the number (12) formed by its first and last digit.

It is an amenable number.

166867375512 is an abundant number, since it is smaller than the sum of its proper divisors (272257298088).

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

166867375512 is a wasteful number, since it uses less digits than its factorization.

166867375512 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 365937255 (or 365937251 counting only the distinct ones).

The product of its digits is 12700800, while the sum is 57.

The spelling of 166867375512 in words is "one hundred sixty-six billion, eight hundred sixty-seven million, three hundred seventy-five thousand, five hundred twelve".