26638027793 has 4 divisors (see below), whose sum is σ = 28687106868. Its totient is φ = 24588948720.

The previous prime is 26638027763. The next prime is 26638027813. The reversal of 26638027793 is 39772083662.

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

It can be written as a sum of positive squares in 2 ways, for example, as 7047266704 + 19590761089 = 83948^2 + 139967^2 .

It is a cyclic number.

It is not a de Polignac number, because 26638027793 - 2¹⁴ = 26638011409 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (26638027763) 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, 1024539518 + ... + 1024539543.

It is an arithmetic number, because the mean of its divisors is an integer number (7171776717).

Almost surely, 2^26638027793 is an apocalyptic number.

It is an amenable number.

26638027793 is a deficient number, since it is larger than the sum of its proper divisors (2049079075).

26638027793 is a wasteful number, since it uses less digits than its factorization.

26638027793 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2049079074.

The product of its (nonzero) digits is 4572288, while the sum is 53.

The spelling of 26638027793 in words is "twenty-six billion, six hundred thirty-eight million, twenty-seven thousand, seven hundred ninety-three".