20508860104 has 32 divisors (see below), whose sum is σ = 38824790400. Its totient is φ = 10155895360.

The previous prime is 20508860101. The next prime is 20508860173. The reversal of 20508860104 is 40106880502.

It is a super-2 number, since 2×20508860104² (a number of 21 digits) contains 22 as substring.

It is a self number, because there is not a number n which added to its sum of digits gives 20508860104.

It is not an unprimeable number, because it can be changed into a prime (20508860101) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 514209 + ... + 552655.

It is an arithmetic number, because the mean of its divisors is an integer number (1213274700).

Almost surely, 2^20508860104 is an apocalyptic number.

It is an amenable number.

20508860104 is a deficient number, since it is larger than the sum of its proper divisors (18315930296).

20508860104 is a wasteful number, since it uses less digits than its factorization.

20508860104 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 39093 (or 39089 counting only the distinct ones).

The product of its (nonzero) digits is 15360, while the sum is 34.

The spelling of 20508860104 in words is "twenty billion, five hundred eight million, eight hundred sixty thousand, one hundred four".