26998633904 has 160 divisors (see below), whose sum is σ = 62261015040. Its totient is φ = 11212185600.

The previous prime is 26998633843. The next prime is 26998633913. The reversal of 26998633904 is 40933689962.

It is an unprimeable number.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 11385839 + ... + 11388209.

It is an arithmetic number, because the mean of its divisors is an integer number (389131344).

Almost surely, 2^26998633904 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 26998633904, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (31130507520).

26998633904 is an abundant number, since it is smaller than the sum of its proper divisors (35262381136).

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

26998633904 is a wasteful number, since it uses less digits than its factorization.

26998633904 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2539 (or 2533 counting only the distinct ones).

The product of its (nonzero) digits is 15116544, while the sum is 59.

The spelling of 26998633904 in words is "twenty-six billion, nine hundred ninety-eight million, six hundred thirty-three thousand, nine hundred four".