26440636223 has 2 divisors, whose sum is σ = 26440636224. Its totient is φ = 26440636222.

The previous prime is 26440636121. The next prime is 26440636249. The reversal of 26440636223 is 32263604462.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 26440636223 - 2²⁶ = 26373527359 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (26440636273) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 13220318111 + 13220318112.

It is an arithmetic number, because the mean of its divisors is an integer number (13220318112).

Almost surely, 2^26440636223 is an apocalyptic number.

26440636223 is a deficient number, since it is larger than the sum of its proper divisors (1).

26440636223 is an equidigital number, since it uses as much as digits as its factorization.

26440636223 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 248832, while the sum is 38.

The spelling of 26440636223 in words is "twenty-six billion, four hundred forty million, six hundred thirty-six thousand, two hundred twenty-three".