166775860275 has 24 divisors (see below), whose sum is σ = 275795056320. Its totient is φ = 88928103840.

The previous prime is 166775860253. The next prime is 166775860313. The reversal of 166775860275 is 572068577661.

It is not a de Polignac number, because 166775860275 - 2⁵ = 166775860243 is a prime.

It is an unprimeable number.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 118816 + ... + 589634.

It is an arithmetic number, because the mean of its divisors is an integer number (11491460680).

Almost surely, 2^166775860275 is an apocalyptic number.

166775860275 is a gapful number since it is divisible by the number (15) formed by its first and last digit.

166775860275 is a deficient number, since it is larger than the sum of its proper divisors (109019196045).

166775860275 is a wasteful number, since it uses less digits than its factorization.

166775860275 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 475555 (or 475550 counting only the distinct ones).

The product of its (nonzero) digits is 29635200, while the sum is 60.

The spelling of 166775860275 in words is "one hundred sixty-six billion, seven hundred seventy-five million, eight hundred sixty thousand, two hundred seventy-five".