26431540513 has 8 divisors (see below), whose sum is σ = 30214303232. Its totient is φ = 22650484896.

The previous prime is 26431540507. The next prime is 26431540529. The reversal of 26431540513 is 31504513462.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 26431540513 - 2²⁹ = 25894669601 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (26431520513) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 393420 + ... + 455677.

It is an arithmetic number, because the mean of its divisors is an integer number (3776787904).

Almost surely, 2^26431540513 is an apocalyptic number.

It is an amenable number.

26431540513 is a deficient number, since it is larger than the sum of its proper divisors (3782762719).

26431540513 is an equidigital number, since it uses as much as digits as its factorization.

26431540513 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 853551.

The product of its (nonzero) digits is 43200, while the sum is 34.

The spelling of 26431540513 in words is "twenty-six billion, four hundred thirty-one million, five hundred forty thousand, five hundred thirteen".