26623793813 has 4 divisors (see below), whose sum is σ = 26624619360. Its totient is φ = 26622968268.

The previous prime is 26623793803. The next prime is 26623793831. The reversal of 26623793813 is 31839732662.

It is a happy number.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4, and also an emirpimes, since its reverse is a distinct semiprime: 31839732662 = 2 ⋅15919866331.

It is a cyclic number.

It is not a de Polignac number, because 26623793813 - 2⁸ = 26623793557 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (26623793803) 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, 362345 + ... + 429582.

It is an arithmetic number, because the mean of its divisors is an integer number (6656154840).

Almost surely, 2^26623793813 is an apocalyptic number.

It is an amenable number.

26623793813 is a deficient number, since it is larger than the sum of its proper divisors (825547).

26623793813 is an equidigital number, since it uses as much as digits as its factorization.

26623793813 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 825546.

The product of its digits is 1959552, while the sum is 50.

The spelling of 26623793813 in words is "twenty-six billion, six hundred twenty-three million, seven hundred ninety-three thousand, eight hundred thirteen".