20620642604 has 24 divisors (see below), whose sum is σ = 37100403648. Its totient is φ = 10022801040.

The previous prime is 20620642577. The next prime is 20620642607. The reversal of 20620642604 is 40624602602.

It is not an unprimeable number, because it can be changed into a prime (20620642607) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 247802 + ... + 320385.

It is an arithmetic number, because the mean of its divisors is an integer number (1545850152).

Almost surely, 2^20620642604 is an apocalyptic number.

It is an amenable number.

20620642604 is a deficient number, since it is larger than the sum of its proper divisors (16479761044).

20620642604 is a wasteful number, since it uses less digits than its factorization.

20620642604 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 568445 (or 568443 counting only the distinct ones).

The product of its (nonzero) digits is 27648, while the sum is 32.

The spelling of 20620642604 in words is "twenty billion, six hundred twenty million, six hundred forty-two thousand, six hundred four".