26979823589623 has 2 divisors, whose sum is σ = 26979823589624. Its totient is φ = 26979823589622.

The previous prime is 26979823589611. The next prime is 26979823589627. The reversal of 26979823589623 is 32698532897962.

It is a strong prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-26979823589623 is a prime.

It is a super-2 number, since 2×26979823589623² (a number of 28 digits) contains 22 as substring.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (26979823589627) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 13489911794811 + 13489911794812.

It is an arithmetic number, because the mean of its divisors is an integer number (13489911794812).

Almost surely, 2^{26979823589623} is an apocalyptic number.

26979823589623 is a deficient number, since it is larger than the sum of its proper divisors (1).

26979823589623 is an equidigital number, since it uses as much as digits as its factorization.

26979823589623 is an evil number, because the sum of its binary digits is even.

The product of its digits is 4232632320, while the sum is 79.

The spelling of 26979823589623 in words is "twenty-six trillion, nine hundred seventy-nine billion, eight hundred twenty-three million, five hundred eighty-nine thousand, six hundred twenty-three".