20626656204 has 96 divisors (see below), whose sum is σ = 60076670976. Its totient is φ = 5351158080.

The previous prime is 20626656199. The next prime is 20626656263. The reversal of 20626656204 is 40265662602.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 784479 + ... + 810345.

It is an arithmetic number, because the mean of its divisors is an integer number (625798656).

Almost surely, 2^20626656204 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 20626656204, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (30038335488).

20626656204 is an abundant number, since it is smaller than the sum of its proper divisors (39450014772).

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

20626656204 is a wasteful number, since it uses less digits than its factorization.

20626656204 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 26755 (or 26753 counting only the distinct ones).

The product of its (nonzero) digits is 207360, while the sum is 39.

The spelling of 20626656204 in words is "twenty billion, six hundred twenty-six million, six hundred fifty-six thousand, two hundred four".