26456440392 has 108 divisors (see below), whose sum is σ = 74321284635. Its totient is φ = 8501834880.

The previous prime is 26456440369. The next prime is 26456440403. The reversal of 26456440392 is 29304465462.

It is a powerful number, because all its prime factors have an exponent greater than 1 and also an Achilles number because it is not a perfect power.

It can be written as a sum of positive squares in 5 ways, for example, as 21519129636 + 4937310756 = 146694^2 + 70266^2 .

It is an ABA number since it can be written as A⋅B^A, here for A=2, B=115014.

It is a super-2 number, since 2×26456440392² (a number of 22 digits) contains 22 as substring.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 26 ways as a sum of consecutive naturals, for example, 40024542 + ... + 40025202.

Almost surely, 2^26456440392 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 26456440392

26456440392 is an abundant number, since it is smaller than the sum of its proper divisors (47864844243).

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

26456440392 is an equidigital number, since it uses as much as digits as its factorization.

26456440392 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1392 (or 695 counting only the distinct ones).

The product of its (nonzero) digits is 1244160, while the sum is 45.

The spelling of 26456440392 in words is "twenty-six billion, four hundred fifty-six million, four hundred forty thousand, three hundred ninety-two".