26556481536 has 360 divisors, whose sum is σ = 80591091840. Its totient is φ = 7759724544.

The previous prime is 26556481481. The next prime is 26556481571. The reversal of 26556481536 is 63518465562.

Its product of digits (5184000) is a multiple of the sum of its prime divisors (180).

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 191053755 + ... + 191053893.

It is an arithmetic number, because the mean of its divisors is an integer number (223864144).

Almost surely, 2^26556481536 is an apocalyptic number.

26556481536 is a gapful number since it is divisible by the number (26) 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 26556481536, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (40295545920).

26556481536 is an abundant number, since it is smaller than the sum of its proper divisors (54034610304).

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

26556481536 is a wasteful number, since it uses less digits than its factorization.

26556481536 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 219 (or 180 counting only the distinct ones).

The product of its digits is 5184000, while the sum is 51.

The spelling of 26556481536 in words is "twenty-six billion, five hundred fifty-six million, four hundred eighty-one thousand, five hundred thirty-six".