166294801475 has 24 divisors (see below), whose sum is σ = 227661803712. Its totient is φ = 119484528800.

The previous prime is 166294801451. The next prime is 166294801489. The reversal of 166294801475 is 574108492661.

It is a happy number.

It is not a de Polignac number, because 166294801475 - 2¹⁴ = 166294785091 is a prime.

It is a hoax number, since the sum of its digits (53) coincides with the sum of the digits of its distinct prime factors.

It is a Duffinian number.

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, 3619997 + ... + 3665646.

It is an arithmetic number, because the mean of its divisors is an integer number (9485908488).

Almost surely, 2^166294801475 is an apocalyptic number.

166294801475 is a deficient number, since it is larger than the sum of its proper divisors (61367002237).

166294801475 is a wasteful number, since it uses less digits than its factorization.

166294801475 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 7285747 (or 7285742 counting only the distinct ones).

The product of its (nonzero) digits is 2903040, while the sum is 53.

It can be divided in two parts, 166294 and 801475, that added together give a palindrome (967769).

The spelling of 166294801475 in words is "one hundred sixty-six billion, two hundred ninety-four million, eight hundred one thousand, four hundred seventy-five".