20549088888 has 32 divisors (see below), whose sum is σ = 53144197200. Its totient is φ = 6613499648.

The previous prime is 20549088887. The next prime is 20549088893. The reversal of 20549088888 is 88888094502.

It is a happy number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (20549088883) 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, 14761581 + ... + 14762972.

Almost surely, 2^20549088888 is an apocalyptic number.

It is an amenable number.

20549088888 is an abundant number, since it is smaller than the sum of its proper divisors (32595108312).

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

20549088888 is a wasteful number, since it uses less digits than its factorization.

20549088888 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 29524591 (or 29524587 counting only the distinct ones).

The product of its (nonzero) digits is 11796480, while the sum is 60.

The spelling of 20549088888 in words is "twenty billion, five hundred forty-nine million, eighty-eight thousand, eight hundred eighty-eight".