26956320693 has 4 divisors (see below), whose sum is σ = 35941760928. Its totient is φ = 17970880460.

The previous prime is 26956320667. The next prime is 26956320707. The reversal of 26956320693 is 39602365962.

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.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-26956320693 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (26956322693) 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, 4492720113 + ... + 4492720118.

It is an arithmetic number, because the mean of its divisors is an integer number (8985440232).

Almost surely, 2^26956320693 is an apocalyptic number.

It is an amenable number.

26956320693 is a deficient number, since it is larger than the sum of its proper divisors (8985440235).

26956320693 is an equidigital number, since it uses as much as digits as its factorization.

26956320693 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 8985440234.

The product of its (nonzero) digits is 3149280, while the sum is 51.

The spelling of 26956320693 in words is "twenty-six billion, nine hundred fifty-six million, three hundred twenty thousand, six hundred ninety-three".