20899480088 has 16 divisors (see below), whose sum is σ = 39405447000. Its totient is φ = 10391360896.

The previous prime is 20899480079. The next prime is 20899480117. The reversal of 20899480088 is 88008499802.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 7295873 + ... + 7298736.

Almost surely, 2^20899480088 is an apocalyptic number.

It is an amenable number.

20899480088 is a deficient number, since it is larger than the sum of its proper divisors (18505966912).

20899480088 is a wasteful number, since it uses less digits than its factorization.

20899480088 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 14594794 (or 14594790 counting only the distinct ones).

The product of its (nonzero) digits is 2654208, while the sum is 56.

The spelling of 20899480088 in words is "twenty billion, eight hundred ninety-nine million, four hundred eighty thousand, eighty-eight".