26320310693 has 2 divisors, whose sum is σ = 26320310694. Its totient is φ = 26320310692.

The previous prime is 26320310689. The next prime is 26320310719. The reversal of 26320310693 is 39601302362.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 16062267169 + 10258043524 = 126737^2 + 101282^2 .

It is a cyclic number.

It is not a de Polignac number, because 26320310693 - 2² = 26320310689 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (26320313693) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 13160155346 + 13160155347.

It is an arithmetic number, because the mean of its divisors is an integer number (13160155347).

Almost surely, 2^26320310693 is an apocalyptic number.

It is an amenable number.

26320310693 is a deficient number, since it is larger than the sum of its proper divisors (1).

26320310693 is an equidigital number, since it uses as much as digits as its factorization.

26320310693 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 34992, while the sum is 35.

The spelling of 26320310693 in words is "twenty-six billion, three hundred twenty million, three hundred ten thousand, six hundred ninety-three".