26845986816 has 360 divisors, whose sum is σ = 87879521184. Its totient is φ = 8121876480.

The previous prime is 26845986803. The next prime is 26845986829. The reversal of 26845986816 is 61868954862.

26845986816 is a `hidden beast` number, since 26 + 8 + 4 + 598 + 6 + 8 + 16 = 666.

It is an interprime number because it is at equal distance from previous prime (26845986803) and next prime (26845986829).

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (7) of ones.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 43794126 + ... + 43794738.

Almost surely, 2^26845986816 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 26845986816, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (43939760592).

26845986816 is an abundant number, since it is smaller than the sum of its proper divisors (61033534368).

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

26845986816 is an frugal number, since it uses more digits than its factorization.

26845986816 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 667 (or 629 counting only the distinct ones).

The product of its digits is 39813120, while the sum is 63.

The spelling of 26845986816 in words is "twenty-six billion, eight hundred forty-five million, nine hundred eighty-six thousand, eight hundred sixteen".