26243806450440 has 64 divisors (see below), whose sum is σ = 78886098158400. Its totient is φ = 6984599159552.

The previous prime is 26243806450417. The next prime is 26243806450447. The reversal of 26243806450440 is 4405460834262.

It is a self number, because there is not a number n which added to its sum of digits gives 26243806450440.

It is not an unprimeable number, because it can be changed into a prime (26243806450447) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 214770342 + ... + 214892501.

It is an arithmetic number, because the mean of its divisors is an integer number (1232595283725).

Almost surely, 2^{26243806450440} is an apocalyptic number.

26243806450440 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

26243806450440 is an abundant number, since it is smaller than the sum of its proper divisors (52642291707960).

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

26243806450440 is a wasteful number, since it uses less digits than its factorization.

26243806450440 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 429663366 (or 429663362 counting only the distinct ones).

The product of its (nonzero) digits is 4423680, while the sum is 48.

The spelling of 26243806450440 in words is "twenty-six trillion, two hundred forty-three billion, eight hundred six million, four hundred fifty thousand, four hundred forty".