26336435640 has 256 divisors, whose sum is σ = 83781734400. Its totient is φ = 6620290560.

The previous prime is 26336435639. The next prime is 26336435659. The reversal of 26336435640 is 4653463362.

It is a junction number, because it is equal to n+sod(n) for n = 26336435592 and 26336435601.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 63 ways as a sum of consecutive naturals, for example, 189470691 + ... + 189470829.

It is an arithmetic number, because the mean of its divisors is an integer number (327272400).

Almost surely, 2^26336435640 is an apocalyptic number.

26336435640 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 26336435640, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (41890867200).

26336435640 is an abundant number, since it is smaller than the sum of its proper divisors (57445298760).

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

26336435640 is a wasteful number, since it uses less digits than its factorization.

26336435640 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 299 (or 233 counting only the distinct ones).

The product of its (nonzero) digits is 933120, while the sum is 42.

The spelling of 26336435640 in words is "twenty-six billion, three hundred thirty-six million, four hundred thirty-five thousand, six hundred forty".