26452912640 has 480 divisors, whose sum is σ = 84807518400. Its totient is φ = 7803371520.

The previous prime is 26452912639. The next prime is 26452912669. The reversal of 26452912640 is 4621925462.

It is an unprimeable number.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 26216456 + ... + 26217464.

It is an arithmetic number, because the mean of its divisors is an integer number (176682330).

Almost surely, 2^26452912640 is an apocalyptic number.

26452912640 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 26452912640, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (42403759200).

26452912640 is an abundant number, since it is smaller than the sum of its proper divisors (58354605760).

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

26452912640 is a wasteful number, since it uses less digits than its factorization.

26452912640 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1076 (or 1053 counting only the distinct ones).

The product of its (nonzero) digits is 207360, while the sum is 41.

The spelling of 26452912640 in words is "twenty-six billion, four hundred fifty-two million, nine hundred twelve thousand, six hundred forty".