20880264408 has 16 divisors (see below), whose sum is σ = 52200661080. Its totient is φ = 6960088128.

The previous prime is 20880264407. The next prime is 20880264473. The reversal of 20880264408 is 80446208802.

It is a self number, because there is not a number n which added to its sum of digits gives 20880264408.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (20880264403) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 435005485 + ... + 435005532.

Almost surely, 2^20880264408 is an apocalyptic number.

It is an amenable number.

20880264408 is an abundant number, since it is smaller than the sum of its proper divisors (31320396672).

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

20880264408 is a wasteful number, since it uses less digits than its factorization.

20880264408 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 870011026 (or 870011022 counting only the distinct ones).

The product of its (nonzero) digits is 196608, while the sum is 42.

The spelling of 20880264408 in words is "twenty billion, eight hundred eighty million, two hundred sixty-four thousand, four hundred eight".