26491633900 has 36 divisors (see below), whose sum is σ = 57593223520. Its totient is φ = 10577044800.

The previous prime is 26491633873. The next prime is 26491633921. The reversal of 26491633900 is 933619462.

It is an unprimeable number.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 190740 + ... + 298939.

Almost surely, 2^26491633900 is an apocalyptic number.

26491633900 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

26491633900 is an abundant number, since it is smaller than the sum of its proper divisors (31101589620).

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

26491633900 is a wasteful number, since it uses less digits than its factorization.

26491633900 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 490234 (or 490227 counting only the distinct ones).

The product of its (nonzero) digits is 209952, while the sum is 43.

The spelling of 26491633900 in words is "twenty-six billion, four hundred ninety-one million, six hundred thirty-three thousand, nine hundred".