26664674243 has 2 divisors, whose sum is σ = 26664674244. Its totient is φ = 26664674242.

The previous prime is 26664674221. The next prime is 26664674261. The reversal of 26664674243 is 34247646662.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 26664674243 - 2²⁸ = 26396238787 is a prime.

It is a super-2 number, since 2×26664674243² (a number of 22 digits) contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 26664674191 and 26664674200.

It is not a weakly prime, because it can be changed into another prime (26664674213) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 13332337121 + 13332337122.

It is an arithmetic number, because the mean of its divisors is an integer number (13332337122).

Almost surely, 2^26664674243 is an apocalyptic number.

26664674243 is a deficient number, since it is larger than the sum of its proper divisors (1).

26664674243 is an equidigital number, since it uses as much as digits as its factorization.

26664674243 is an evil number, because the sum of its binary digits is even.

The product of its digits is 6967296, while the sum is 50.

The spelling of 26664674243 in words is "twenty-six billion, six hundred sixty-four million, six hundred seventy-four thousand, two hundred forty-three".