166640043504252 has 48 divisors (see below), whose sum is σ = 397108856374272. Its totient is φ = 54363580344000.

The previous prime is 166640043504169. The next prime is 166640043504293. The reversal of 166640043504252 is 252405340046661.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 21165502 + ... + 27951002.

It is an arithmetic number, because the mean of its divisors is an integer number (8273101174464).

Almost surely, 2^{166640043504252} is an apocalyptic number.

166640043504252 is a gapful number since it is divisible by the number (12) formed by its first and last digit.

It is an amenable number.

166640043504252 is an abundant number, since it is smaller than the sum of its proper divisors (230468812870020).

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

166640043504252 is a wasteful number, since it uses less digits than its factorization.

166640043504252 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 6829098 (or 6829096 counting only the distinct ones).

The product of its (nonzero) digits is 4147200, while the sum is 48.

The spelling of 166640043504252 in words is "one hundred sixty-six trillion, six hundred forty billion, forty-three million, five hundred four thousand, two hundred fifty-two".