166255126650 has 36 divisors (see below), whose sum is σ = 446672108142. Its totient is φ = 44334700320.

The previous prime is 166255126603. The next prime is 166255126673. The reversal of 166255126650 is 56621552661.

166255126650 is a `hidden beast` number, since 1 + 6 + 6 + 25 + 512 + 66 + 50 = 666.

It can be written as a sum of positive squares in 3 ways, for example, as 149335100721 + 16920025929 = 386439^2 + 130077^2 .

It is a Harshad number since it is a multiple of its sum of digits (45).

It is a Curzon number.

It is a junction number, because it is equal to n+sod(n) for n = 166255126596 and 166255126605.

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, 184727469 + ... + 184728368.

Almost surely, 2^166255126650 is an apocalyptic number.

166255126650 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

166255126650 is an abundant number, since it is smaller than the sum of its proper divisors (280416981492).

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

166255126650 is a wasteful number, since it uses less digits than its factorization.

166255126650 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 369455855 (or 369455847 counting only the distinct ones).

The product of its (nonzero) digits is 648000, while the sum is 45.

The spelling of 166255126650 in words is "one hundred sixty-six billion, two hundred fifty-five million, one hundred twenty-six thousand, six hundred fifty".