20100501892 has 12 divisors (see below), whose sum is σ = 35176899100. Its totient is φ = 10049959296.

The previous prime is 20100501887. The next prime is 20100501913. The reversal of 20100501892 is 29810500102.

It can be written as a sum of positive squares in 2 ways, for example, as 18653003776 + 1447498116 = 136576^2 + 38046^2 .

It is a self number, because there is not a number n which added to its sum of digits gives 20100501892.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 178408 + ... + 268384.

Almost surely, 2^20100501892 is an apocalyptic number.

It is an amenable number.

20100501892 is a deficient number, since it is larger than the sum of its proper divisors (15076397208).

20100501892 is a wasteful number, since it uses less digits than its factorization.

20100501892 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 145830 (or 145828 counting only the distinct ones).

The product of its (nonzero) digits is 1440, while the sum is 28.

The spelling of 20100501892 in words is "twenty billion, one hundred million, five hundred one thousand, eight hundred ninety-two".