26597803667440 has 160 divisors (see below), whose sum is σ = 66161901242304. Its totient is φ = 9908661780480.

The previous prime is 26597803667417. The next prime is 26597803667447. The reversal of 26597803667440 is 4476630879562.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (26597803667447) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 1746745107 + ... + 1746760333.

Almost surely, 2^{26597803667440} is an apocalyptic number.

26597803667440 is a gapful number since it is divisible by the number (20) 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 26597803667440, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (33080950621152).

26597803667440 is an abundant number, since it is smaller than the sum of its proper divisors (39564097574864).

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

26597803667440 is a wasteful number, since it uses less digits than its factorization.

26597803667440 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 28595 (or 28589 counting only the distinct ones).

The product of its (nonzero) digits is 365783040, while the sum is 67.

The spelling of 26597803667440 in words is "twenty-six trillion, five hundred ninety-seven billion, eight hundred three million, six hundred sixty-seven thousand, four hundred forty".