26359287631 has 4 divisors (see below), whose sum is σ = 27209587264. Its totient is φ = 25508988000.

The previous prime is 26359287607. The next prime is 26359287667. The reversal of 26359287631 is 13678295362.

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

It is a cyclic number.

It is not a de Polignac number, because 26359287631 - 2²³ = 26350899023 is a prime.

It is a super-2 number, since 2×26359287631² (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 (26359297631) 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, 425149770 + ... + 425149831.

It is an arithmetic number, because the mean of its divisors is an integer number (6802396816).

Almost surely, 2^26359287631 is an apocalyptic number.

26359287631 is a deficient number, since it is larger than the sum of its proper divisors (850299633).

26359287631 is an equidigital number, since it uses as much as digits as its factorization.

26359287631 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 850299632.

The product of its digits is 3265920, while the sum is 52.

The spelling of 26359287631 in words is "twenty-six billion, three hundred fifty-nine million, two hundred eighty-seven thousand, six hundred thirty-one".