166057563785 has 8 divisors (see below), whose sum is σ = 203508844416. Its totient is φ = 130019539120.

The previous prime is 166057563743. The next prime is 166057563797. The reversal of 166057563785 is 587365750661.

166057563785 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 166057563785 - 2¹⁴ = 166057547401 is a prime.

It is a super-2 number, since 2×166057563785² (a number of 23 digits) contains 22 as substring.

It is a Duffinian number.

It is a Curzon number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 353313731 + ... + 353314200.

It is an arithmetic number, because the mean of its divisors is an integer number (25438605552).

Almost surely, 2^166057563785 is an apocalyptic number.

It is an amenable number.

166057563785 is a deficient number, since it is larger than the sum of its proper divisors (37451280631).

166057563785 is an equidigital number, since it uses as much as digits as its factorization.

166057563785 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 706627983.

The product of its (nonzero) digits is 31752000, while the sum is 59.

The spelling of 166057563785 in words is "one hundred sixty-six billion, fifty-seven million, five hundred sixty-three thousand, seven hundred eighty-five".