26091136431 has 6 divisors (see below), whose sum is σ = 37687197080. Its totient is φ = 17394090948.

The previous prime is 26091136417. The next prime is 26091136439. The reversal of 26091136431 is 13463119062.

26091136431 is a `hidden beast` number, since 2 + 6 + 0 + 9 + 1 + 1 + 3 + 643 + 1 = 666.

It is not a de Polignac number, because 26091136431 - 2⁵ = 26091136399 is a prime.

It is a super-2 number, since 2×26091136431² (a number of 22 digits) contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (26091136439) by changing a digit.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 1449507571 + ... + 1449507588.

Almost surely, 2^26091136431 is an apocalyptic number.

26091136431 is a deficient number, since it is larger than the sum of its proper divisors (11596060649).

26091136431 is a wasteful number, since it uses less digits than its factorization.

26091136431 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2899015165 (or 2899015162 counting only the distinct ones).

The product of its (nonzero) digits is 23328, while the sum is 36.

The spelling of 26091136431 in words is "twenty-six billion, ninety-one million, one hundred thirty-six thousand, four hundred thirty-one".