20099910850 has 12 divisors (see below), whose sum is σ = 37385834274. Its totient is φ = 8039964320.

The previous prime is 20099910833. The next prime is 20099910899. The reversal of 20099910850 is 5801999002.

It can be written as a sum of positive squares in 3 ways, for example, as 19340743041 + 759167809 = 139071^2 + 27553^2 .

It is a junction number, because it is equal to n+sod(n) for n = 20099910797 and 20099910806.

It is an unprimeable number.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 200999059 + ... + 200999158.

Almost surely, 2^20099910850 is an apocalyptic number.

20099910850 is a deficient number, since it is larger than the sum of its proper divisors (17285923424).

20099910850 is a wasteful number, since it uses less digits than its factorization.

20099910850 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 401998229 (or 401998224 counting only the distinct ones).

The product of its (nonzero) digits is 58320, while the sum is 43.

The spelling of 20099910850 in words is "twenty billion, ninety-nine million, nine hundred ten thousand, eight hundred fifty".