20566944102 has 16 divisors (see below), whose sum is σ = 41135295600. Its totient is φ = 6855413472.

The previous prime is 20566944077. The next prime is 20566944113. The reversal of 20566944102 is 20144966502.

It is a happy number.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 301024 + ... + 362972.

It is an arithmetic number, because the mean of its divisors is an integer number (2570955975).

Almost surely, 2^20566944102 is an apocalyptic number.

20566944102 is an abundant number, since it is smaller than the sum of its proper divisors (20568351498).

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

20566944102 is a wasteful number, since it uses less digits than its factorization.

20566944102 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 117287.

The product of its (nonzero) digits is 103680, while the sum is 39.

The spelling of 20566944102 in words is "twenty billion, five hundred sixty-six million, nine hundred forty-four thousand, one hundred two".