26405400560 has 160 divisors (see below), whose sum is σ = 78408981504. Its totient is φ = 8029440000.

The previous prime is 26405400547. The next prime is 26405400563. The reversal of 26405400560 is 6500450462.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (26405400563) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 200285 + ... + 304835.

Almost surely, 2^26405400560 is an apocalyptic number.

26405400560 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 26405400560, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (39204490752).

26405400560 is an abundant number, since it is smaller than the sum of its proper divisors (52003580944).

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

26405400560 is a wasteful number, since it uses less digits than its factorization.

26405400560 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 104623 (or 104617 counting only the distinct ones).

The product of its (nonzero) digits is 28800, while the sum is 32.

The spelling of 26405400560 in words is "twenty-six billion, four hundred five million, four hundred thousand, five hundred sixty".