26400442464020 has 12 divisors (see below), whose sum is σ = 55440929174484. Its totient is φ = 10560176985600.

The previous prime is 26400442464017. The next prime is 26400442464127. The reversal of 26400442464020 is 2046424400462.

It can be written as a sum of positive squares in 2 ways, for example, as 14874566843536 + 11525875620484 = 3856756^2 + 3394978^2 .

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 660011061581 + ... + 660011061620.

It is an arithmetic number, because the mean of its divisors is an integer number (4620077431207).

Almost surely, 2^{26400442464020} is an apocalyptic number.

26400442464020 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

26400442464020 is an abundant number, since it is smaller than the sum of its proper divisors (29040486710464).

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

26400442464020 is a wasteful number, since it uses less digits than its factorization.

26400442464020 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1320022123210 (or 1320022123208 counting only the distinct ones).

The product of its (nonzero) digits is 294912, while the sum is 38.

Adding to 26400442464020 its reverse (2046424400462), we get a palindrome (28446866864482).

The spelling of 26400442464020 in words is "twenty-six trillion, four hundred billion, four hundred forty-two million, four hundred sixty-four thousand, twenty".