20501045199 has 24 divisors (see below), whose sum is σ = 30313986560. Its totient is φ = 13343923152.

The previous prime is 20501045177. The next prime is 20501045203. The reversal of 20501045199 is 99154010502.

20501045199 is a `hidden beast` number, since 20 + 501 + 0 + 45 + 1 + 99 = 666.

It is not a de Polignac number, because 20501045199 - 2¹² = 20501041103 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (20501045099) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 1042512 + ... + 1061994.

Almost surely, 2^20501045199 is an apocalyptic number.

20501045199 is a deficient number, since it is larger than the sum of its proper divisors (9812941361).

20501045199 is a wasteful number, since it uses less digits than its factorization.

20501045199 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 22251 (or 22248 counting only the distinct ones).

The product of its (nonzero) digits is 16200, while the sum is 36.

The spelling of 20501045199 in words is "twenty billion, five hundred one million, forty-five thousand, one hundred ninety-nine".