26550089021808 has 240 divisors, whose sum is σ = 81812664591840. Its totient is φ = 7970664038400.

The previous prime is 26550089021783. The next prime is 26550089021851. The reversal of 26550089021808 is 80812098005562.

It is a happy number.

26550089021808 is a `hidden beast` number, since 2 + 6 + 550 + 0 + 8 + 9 + 0 + 2 + 1 + 80 + 8 = 666.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 408248238 + ... + 408313266.

It is an arithmetic number, because the mean of its divisors is an integer number (340886102466).

Almost surely, 2^{26550089021808} 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 26550089021808, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (40906332295920).

26550089021808 is an abundant number, since it is smaller than the sum of its proper divisors (55262575570032).

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

26550089021808 is a wasteful number, since it uses less digits than its factorization.

26550089021808 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 67448 (or 67439 counting only the distinct ones).

The product of its (nonzero) digits is 2764800, while the sum is 54.

The spelling of 26550089021808 in words is "twenty-six trillion, five hundred fifty billion, eighty-nine million, twenty-one thousand, eight hundred eight".