166261315050 has 36 divisors (see below), whose sum is σ = 446688734310. Its totient is φ = 44336350560.

The previous prime is 166261315027. The next prime is 166261315133. The reversal of 166261315050 is 50513162661.

166261315050 is a `hidden beast` number, since 1 + 6 + 62 + 61 + 31 + 505 + 0 = 666.

It can be written as a sum of positive squares in 3 ways, for example, as 109222979121 + 57038335929 = 330489^2 + 238827^2 .

It is a junction number, because it is equal to n+sod(n) for n = 166261314996 and 166261315014.

It is an unprimeable number.

It is a polite number, since it can be written in 17 ways as a sum of consecutive naturals, for example, 184734345 + ... + 184735244.

Almost surely, 2^166261315050 is an apocalyptic number.

166261315050 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

166261315050 is an abundant number, since it is smaller than the sum of its proper divisors (280427419260).

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

166261315050 is a wasteful number, since it uses less digits than its factorization.

166261315050 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 369469607 (or 369469599 counting only the distinct ones).

The product of its (nonzero) digits is 32400, while the sum is 36.

The spelling of 166261315050 in words is "one hundred sixty-six billion, two hundred sixty-one million, three hundred fifteen thousand, fifty".