26269955881 has 4 divisors (see below), whose sum is σ = 28290721732. Its totient is φ = 24249190032.

The previous prime is 26269955849. The next prime is 26269955893. The reversal of 26269955881 is 18855996262.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 16920806400 + 9349149481 = 130080^2 + 96691^2 .

It is a cyclic number.

It is not a de Polignac number, because 26269955881 - 2⁵ = 26269955849 is a prime.

It is a super-2 number, since 2×26269955881² (a number of 22 digits) contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (26269955981) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1010382906 + ... + 1010382931.

It is an arithmetic number, because the mean of its divisors is an integer number (7072680433).

Almost surely, 2^26269955881 is an apocalyptic number.

It is an amenable number.

26269955881 is a deficient number, since it is larger than the sum of its proper divisors (2020765851).

26269955881 is a wasteful number, since it uses less digits than its factorization.

26269955881 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2020765850.

The product of its digits is 18662400, while the sum is 61.

The spelling of 26269955881 in words is "twenty-six billion, two hundred sixty-nine million, nine hundred fifty-five thousand, eight hundred eighty-one".