20495105004 has 48 divisors (see below), whose sum is σ = 55238150016. Its totient is φ = 5845305600.

The previous prime is 20495104991. The next prime is 20495105027. The reversal of 20495105004 is 40050159402.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 4564402 + ... + 4568889.

It is an arithmetic number, because the mean of its divisors is an integer number (1150794792).

Almost surely, 2^20495105004 is an apocalyptic number.

It is an amenable number.

20495105004 is an abundant number, since it is smaller than the sum of its proper divisors (34743045012).

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

20495105004 is a wasteful number, since it uses less digits than its factorization.

20495105004 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 9133326 (or 9133324 counting only the distinct ones).

The product of its (nonzero) digits is 7200, while the sum is 30.

The spelling of 20495105004 in words is "twenty billion, four hundred ninety-five million, one hundred five thousand, four".