26256821232 has 160 divisors (see below), whose sum is σ = 72568569600. Its totient is φ = 8152141824.

The previous prime is 26256821191. The next prime is 26256821251. The reversal of 26256821232 is 23212865262.

It is a super-2 number, since 2×26256821232² (a number of 22 digits) contains 22 as substring.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 42417819 + ... + 42418437.

It is an arithmetic number, because the mean of its divisors is an integer number (453553560).

Almost surely, 2^26256821232 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 26256821232, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (36284284800).

26256821232 is an abundant number, since it is smaller than the sum of its proper divisors (46311748368).

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

26256821232 is a wasteful number, since it uses less digits than its factorization.

26256821232 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1103 (or 1097 counting only the distinct ones).

The product of its digits is 138240, while the sum is 39.

The spelling of 26256821232 in words is "twenty-six billion, two hundred fifty-six million, eight hundred twenty-one thousand, two hundred thirty-two".