26450447565 has 32 divisors (see below), whose sum is σ = 42987407616. Its totient is φ = 13885329920.

The previous prime is 26450447563. The next prime is 26450447623. The reversal of 26450447565 is 56574405462.

It is not a de Polignac number, because 26450447565 - 2¹ = 26450447563 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (26450447563) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 636979 + ... + 677231.

It is an arithmetic number, because the mean of its divisors is an integer number (1343356488).

Almost surely, 2^26450447565 is an apocalyptic number.

It is an amenable number.

26450447565 is a deficient number, since it is larger than the sum of its proper divisors (16536960051).

26450447565 is a wasteful number, since it uses less digits than its factorization.

26450447565 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 40949.

The product of its (nonzero) digits is 4032000, while the sum is 48.

The spelling of 26450447565 in words is "twenty-six billion, four hundred fifty million, four hundred forty-seven thousand, five hundred sixty-five".