20566194180 has 48 divisors (see below), whose sum is σ = 65811822720. Its totient is φ = 4700844288.

The previous prime is 20566194179. The next prime is 20566194203. The reversal of 20566194180 is 8149166502.

It is a Harshad number since it is a multiple of its sum of digits (42).

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 24483145 + ... + 24483984.

It is an arithmetic number, because the mean of its divisors is an integer number (1371079640).

Almost surely, 2^20566194180 is an apocalyptic number.

20566194180 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

20566194180 is an abundant number, since it is smaller than the sum of its proper divisors (45245628540).

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

20566194180 is a wasteful number, since it uses less digits than its factorization.

20566194180 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 48967148 (or 48967146 counting only the distinct ones).

The product of its (nonzero) digits is 103680, while the sum is 42.

The spelling of 20566194180 in words is "twenty billion, five hundred sixty-six million, one hundred ninety-four thousand, one hundred eighty".