26495620256 has 72 divisors (see below), whose sum is σ = 61123114836. Its totient is φ = 11272289280.

The previous prime is 26495620243. The next prime is 26495620259. The reversal of 26495620256 is 65202659462.

It can be written as a sum of positive squares in 2 ways, for example, as 23312403856 + 3183216400 = 152684^2 + 56420^2 .

It is a self number, because there is not a number n which added to its sum of digits gives 26495620256.

It is not an unprimeable number, because it can be changed into a prime (26495620259) by changing a digit.

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 11 ways as a sum of consecutive naturals, for example, 153146 + ... + 276486.

Almost surely, 2^26495620256 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 26495620256, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (30561557418).

26495620256 is an abundant number, since it is smaller than the sum of its proper divisors (34627494580).

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

26495620256 is a wasteful number, since it uses less digits than its factorization.

26495620256 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 123502 (or 123487 counting only the distinct ones).

The product of its (nonzero) digits is 1555200, while the sum is 47.

The spelling of 26495620256 in words is "twenty-six billion, four hundred ninety-five million, six hundred twenty thousand, two hundred fifty-six".