26545239904080 has 640 divisors, whose sum is σ = 91336947204096. Its totient is φ = 6349993574400.

The previous prime is 26545239904067. The next prime is 26545239904087. The reversal of 26545239904080 is 8040993254562.

It is a super-2 number, since 2×26545239904080² (a number of 28 digits) contains 22 as substring.

It is a self number, because there is not a number n which added to its sum of digits gives 26545239904080.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (26545239904087) by changing a digit.

It is a polite number, since it can be written in 127 ways as a sum of consecutive naturals, for example, 1359123915 + ... + 1359143445.

Almost surely, 2^{26545239904080} is an apocalyptic number.

26545239904080 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 26545239904080, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (45668473602048).

26545239904080 is an abundant number, since it is smaller than the sum of its proper divisors (64791707300016).

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

26545239904080 is a wasteful number, since it uses less digits than its factorization.

26545239904080 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 19795 (or 19789 counting only the distinct ones).

The product of its (nonzero) digits is 18662400, while the sum is 57.

The spelling of 26545239904080 in words is "twenty-six trillion, five hundred forty-five billion, two hundred thirty-nine million, nine hundred four thousand, eighty".