166601640352 has 48 divisors (see below), whose sum is σ = 380998864512. Its totient is φ = 70230193920.

The previous prime is 166601640269. The next prime is 166601640377. The reversal of 166601640352 is 253046106661.

It is a super-2 number, since 2×166601640352² (a number of 23 digits) contains 22 as substring.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 6082708 + ... + 6110035.

It is an arithmetic number, because the mean of its divisors is an integer number (7937476344).

Almost surely, 2^166601640352 is an apocalyptic number.

It is an amenable number.

166601640352 is an abundant number, since it is smaller than the sum of its proper divisors (214397224160).

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

166601640352 is a wasteful number, since it uses less digits than its factorization.

166601640352 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 12192821 (or 12192813 counting only the distinct ones).

The product of its (nonzero) digits is 155520, while the sum is 40.

The spelling of 166601640352 in words is "one hundred sixty-six billion, six hundred one million, six hundred forty thousand, three hundred fifty-two".