26815326912 has 448 divisors, whose sum is σ = 88352985600. Its totient is φ = 7973222400.

The previous prime is 26815326877. The next prime is 26815326929. The reversal of 26815326912 is 21962351862.

26815326912 is a `hidden beast` number, since 26 + 8 + 1 + 532 + 6 + 91 + 2 = 666.

It is an unprimeable number.

It is a polite number, since it can be written in 63 ways as a sum of consecutive naturals, for example, 204697087 + ... + 204697217.

Almost surely, 2^26815326912 is an apocalyptic number.

26815326912 is a gapful number since it is divisible by the number (22) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 26815326912, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (44176492800).

26815326912 is an abundant number, since it is smaller than the sum of its proper divisors (61537658688).

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

26815326912 is a wasteful number, since it uses less digits than its factorization.

26815326912 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 274 (or 236 counting only the distinct ones).

The product of its digits is 311040, while the sum is 45.

The spelling of 26815326912 in words is "twenty-six billion, eight hundred fifteen million, three hundred twenty-six thousand, nine hundred twelve".