26396593631 has 4 divisors (see below), whose sum is σ = 26440662000. Its totient is φ = 26352525264.

The previous prime is 26396593621. The next prime is 26396593673. The reversal of 26396593631 is 13639569362.

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

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-26396593631 is a prime.

It is a super-2 number, since 2×26396593631² (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 (26396593621) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 22033286 + ... + 22034483.

It is an arithmetic number, because the mean of its divisors is an integer number (6610165500).

Almost surely, 2^26396593631 is an apocalyptic number.

26396593631 is a deficient number, since it is larger than the sum of its proper divisors (44068369).

26396593631 is an equidigital number, since it uses as much as digits as its factorization.

26396593631 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 44068368.

The product of its digits is 4723920, while the sum is 53.

The spelling of 26396593631 in words is "twenty-six billion, three hundred ninety-six million, five hundred ninety-three thousand, six hundred thirty-one".