26608989900 has 72 divisors (see below), whose sum is σ = 81517438800. Its totient is φ = 6678333440.

The previous prime is 26608989881. The next prime is 26608989929. The reversal of 26608989900 is 998980662.

It is a Smith number, since the sum of its digits (57) coincides with the sum of the digits of its prime factors.

It is an unprimeable number.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 2603625 + ... + 2613824.

It is an arithmetic number, because the mean of its divisors is an integer number (1132186650).

Almost surely, 2^26608989900 is an apocalyptic number.

26608989900 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

26608989900 is an abundant number, since it is smaller than the sum of its proper divisors (54908448900).

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

26608989900 is a wasteful number, since it uses less digits than its factorization.

26608989900 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5217483 (or 5217476 counting only the distinct ones).

The product of its (nonzero) digits is 3359232, while the sum is 57.

The spelling of 26608989900 in words is "twenty-six billion, six hundred eight million, nine hundred eighty-nine thousand, nine hundred".