20879955050 has 96 divisors (see below), whose sum is σ = 43530696000. Its totient is φ = 7412751360.

The previous prime is 20879955049. The next prime is 20879955071. The reversal of 20879955050 is 5055997802.

It is a Harshad number since it is a multiple of its sum of digits (50).

It is a self number, because there is not a number n which added to its sum of digits gives 20879955050.

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 47 ways as a sum of consecutive naturals, for example, 1050101 + ... + 1069799.

It is an arithmetic number, because the mean of its divisors is an integer number (453444750).

Almost surely, 2^20879955050 is an apocalyptic number.

20879955050 is an abundant number, since it is smaller than the sum of its proper divisors (22650740950).

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

20879955050 is a wasteful number, since it uses less digits than its factorization.

20879955050 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 19800 (or 19795 counting only the distinct ones).

The product of its (nonzero) digits is 1134000, while the sum is 50.

The spelling of 20879955050 in words is "twenty billion, eight hundred seventy-nine million, nine hundred fifty-five thousand, fifty".