166163402610 has 48 divisors (see below), whose sum is σ = 432060100056. Its totient is φ = 44306625024.

The previous prime is 166163402609. The next prime is 166163402659. The reversal of 166163402610 is 16204361661.

It is a happy number.

166163402610 is a `hidden beast` number, since 1 + 6 + 6 + 1 + 6 + 34 + 0 + 2 + 610 = 666.

It can be written as a sum of positive squares in 4 ways, for example, as 166128792921 + 34609689 = 407589^2 + 5883^2 .

It is a super-2 number, since 2×166163402610² (a number of 23 digits) contains 22 as substring.

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, 1142532 + ... + 1279728.

Almost surely, 2^166163402610 is an apocalyptic number.

166163402610 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

166163402610 is an abundant number, since it is smaller than the sum of its proper divisors (265896697446).

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

166163402610 is a wasteful number, since it uses less digits than its factorization.

166163402610 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 150667 (or 150664 counting only the distinct ones).

The product of its (nonzero) digits is 31104, while the sum is 36.

The spelling of 166163402610 in words is "one hundred sixty-six billion, one hundred sixty-three million, four hundred two thousand, six hundred ten".