26906651856 has 180 divisors, whose sum is σ = 88796973252. Its totient is φ = 7582159872.

The previous prime is 26906651831. The next prime is 26906651879. The reversal of 26906651856 is 65815660962.

26906651856 is a `hidden beast` number, since 2 + 69 + 0 + 66 + 518 + 5 + 6 = 666.

It can be written as a sum of positive squares in 2 ways, for example, as 12878618256 + 14028033600 = 113484^2 + 118440^2 .

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 35 ways as a sum of consecutive naturals, for example, 488970 + ... + 541206.

Almost surely, 2^26906651856 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 26906651856, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (44398486626).

26906651856 is an abundant number, since it is smaller than the sum of its proper divisors (61890321396).

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

26906651856 is a wasteful number, since it uses less digits than its factorization.

26906651856 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 52338 (or 52322 counting only the distinct ones).

The product of its (nonzero) digits is 4665600, while the sum is 54.

The spelling of 26906651856 in words is "twenty-six billion, nine hundred six million, six hundred fifty-one thousand, eight hundred fifty-six".