20888688072 has 32 divisors (see below), whose sum is σ = 59681966400. Its totient is φ = 5968196544.

The previous prime is 20888688059. The next prime is 20888688097. The reversal of 20888688072 is 27088688802.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 62168547 + ... + 62168882.

It is an arithmetic number, because the mean of its divisors is an integer number (1865061450).

Almost surely, 2^20888688072 is an apocalyptic number.

It is an amenable number.

20888688072 is an abundant number, since it is smaller than the sum of its proper divisors (38793278328).

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

20888688072 is a wasteful number, since it uses less digits than its factorization.

20888688072 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 124337445 (or 124337441 counting only the distinct ones).

The product of its (nonzero) digits is 5505024, while the sum is 57.

The spelling of 20888688072 in words is "twenty billion, eight hundred eighty-eight million, six hundred eighty-eight thousand, seventy-two".