26563315389 has 24 divisors (see below), whose sum is σ = 40370297760. Its totient is φ = 15486299712.

The previous prime is 26563315379. The next prime is 26563315393. The reversal of 26563315389 is 98351336562.

It is not a de Polignac number, because 26563315389 - 2⁵ = 26563315357 is a prime.

It is a Curzon number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (26563315379) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 1369134 + ... + 1388399.

It is an arithmetic number, because the mean of its divisors is an integer number (1682095740).

Almost surely, 2^26563315389 is an apocalyptic number.

It is an amenable number.

26563315389 is a deficient number, since it is larger than the sum of its proper divisors (13806982371).

26563315389 is a wasteful number, since it uses less digits than its factorization.

26563315389 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2757581 (or 2757568 counting only the distinct ones).

The product of its digits is 3499200, while the sum is 51.

The spelling of 26563315389 in words is "twenty-six billion, five hundred sixty-three million, three hundred fifteen thousand, three hundred eighty-nine".