26818693963 has 2 divisors, whose sum is σ = 26818693964. Its totient is φ = 26818693962.

The previous prime is 26818693939. The next prime is 26818693969. The reversal of 26818693963 is 36939681862.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 26818693963 - 2⁵ = 26818693931 is a prime.

It is not a weakly prime, because it can be changed into another prime (26818693969) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 13409346981 + 13409346982.

It is an arithmetic number, because the mean of its divisors is an integer number (13409346982).

Almost surely, 2^26818693963 is an apocalyptic number.

26818693963 is a deficient number, since it is larger than the sum of its proper divisors (1).

26818693963 is an equidigital number, since it uses as much as digits as its factorization.

26818693963 is an evil number, because the sum of its binary digits is even.

The product of its digits is 20155392, while the sum is 61.

The spelling of 26818693963 in words is "twenty-six billion, eight hundred eighteen million, six hundred ninety-three thousand, nine hundred sixty-three".