20501005852 has 36 divisors (see below), whose sum is σ = 37988781880. Its totient is φ = 9653798592.

The previous prime is 20501005841. The next prime is 20501005867. The reversal of 20501005852 is 25850010502.

It is a self number, because there is not a number n which added to its sum of digits gives 20501005852.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 2270098 + ... + 2279110.

Almost surely, 2^20501005852 is an apocalyptic number.

It is an amenable number.

20501005852 is a deficient number, since it is larger than the sum of its proper divisors (17487776028).

20501005852 is a wasteful number, since it uses less digits than its factorization.

20501005852 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 9382 (or 9207 counting only the distinct ones).

The product of its (nonzero) digits is 4000, while the sum is 28.

The spelling of 20501005852 in words is "twenty billion, five hundred one million, five thousand, eight hundred fifty-two".