20838963888 has 30 divisors (see below), whose sum is σ = 58320156284. Its totient is φ = 6946321248.

The previous prime is 20838963839. The next prime is 20838963889. The reversal of 20838963888 is 88836983802.

It is not an unprimeable number, because it can be changed into a prime (20838963889) by changing a digit.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 72357370 + ... + 72357657.

Almost surely, 2^20838963888 is an apocalyptic number.

It is an amenable number.

20838963888 is an abundant number, since it is smaller than the sum of its proper divisors (37481192396).

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

20838963888 is a wasteful number, since it uses less digits than its factorization.

20838963888 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 144715041 (or 144715032 counting only the distinct ones).

The product of its (nonzero) digits is 31850496, while the sum is 63.

The spelling of 20838963888 in words is "twenty billion, eight hundred thirty-eight million, nine hundred sixty-three thousand, eight hundred eighty-eight".