20888088216 has 128 divisors (see below), whose sum is σ = 57938976000. Its totient is φ = 6248406528.

The previous prime is 20888088203. The next prime is 20888088257. The reversal of 20888088216 is 61288088802.

It is a happy number.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 685971 + ... + 715773.

It is an arithmetic number, because the mean of its divisors is an integer number (452648250).

Almost surely, 2^20888088216 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 20888088216, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (28969488000).

20888088216 is an abundant number, since it is smaller than the sum of its proper divisors (37050887784).

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

20888088216 is a wasteful number, since it uses less digits than its factorization.

20888088216 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 29913 (or 29909 counting only the distinct ones).

The product of its (nonzero) digits is 786432, while the sum is 51.

The spelling of 20888088216 in words is "twenty billion, eight hundred eighty-eight million, eighty-eight thousand, two hundred sixteen".