166572889059 has 32 divisors (see below), whose sum is σ = 237828994560. Its totient is φ = 103394188800.

The previous prime is 166572889037. The next prime is 166572889061. The reversal of 166572889059 is 950988275661.

It is not a de Polignac number, because 166572889059 - 2¹² = 166572884963 is a prime.

It is not an unprimeable number, because it can be changed into a prime (166572889759) by changing a digit.

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 31 ways as a sum of consecutive naturals, for example, 1217979 + ... + 1347819.

It is an arithmetic number, because the mean of its divisors is an integer number (7432156080).

Almost surely, 2^166572889059 is an apocalyptic number.

166572889059 is a gapful number since it is divisible by the number (19) formed by its first and last digit.

166572889059 is a deficient number, since it is larger than the sum of its proper divisors (71256105501).

166572889059 is a wasteful number, since it uses less digits than its factorization.

166572889059 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 130251.

The product of its (nonzero) digits is 65318400, while the sum is 66.

The spelling of 166572889059 in words is "one hundred sixty-six billion, five hundred seventy-two million, eight hundred eighty-nine thousand, fifty-nine".