20388883608 has 96 divisors (see below), whose sum is σ = 57197790000. Its totient is φ = 6553467648.

The previous prime is 20388883607. The next prime is 20388883609. The reversal of 20388883608 is 80638888302.

20388883608 is a `hidden beast` number, since 20 + 3 + 8 + 8 + 8 + 8 + 3 + 608 = 666.

It is an interprime number because it is at equal distance from previous prime (20388883607) and next prime (20388883609).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (20388883607) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 1725063 + ... + 1736841.

Almost surely, 2^20388883608 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 20388883608, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (28598895000).

20388883608 is an abundant number, since it is smaller than the sum of its proper divisors (36808906392).

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

20388883608 is a wasteful number, since it uses less digits than its factorization.

20388883608 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 12649 (or 12642 counting only the distinct ones).

The product of its (nonzero) digits is 3538944, while the sum is 54.

It can be divided in two parts, 203888 and 83608, that added together give a cube (287496 = 66³).

The spelling of 20388883608 in words is "twenty billion, three hundred eighty-eight million, eight hundred eighty-three thousand, six hundred eight".