20881900548 has 24 divisors (see below), whose sum is σ = 54138260960. Its totient is φ = 6960633480.

The previous prime is 20881900541. The next prime is 20881900561. The reversal of 20881900548 is 84500918802.

It is a happy number.

20881900548 is a `hidden beast` number, since 20 + 8 + 81 + 9 + 0 + 0 + 548 = 666.

It is not an unprimeable number, because it can be changed into a prime (20881900541) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 96675358 + ... + 96675573.

Almost surely, 2^20881900548 is an apocalyptic number.

It is an amenable number.

20881900548 is an abundant number, since it is smaller than the sum of its proper divisors (33256360412).

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

20881900548 is a wasteful number, since it uses less digits than its factorization.

20881900548 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 193350944 (or 193350936 counting only the distinct ones).

The product of its (nonzero) digits is 184320, while the sum is 45.

The spelling of 20881900548 in words is "twenty billion, eight hundred eighty-one million, nine hundred thousand, five hundred forty-eight".