26436634423 has 2 divisors, whose sum is σ = 26436634424. Its totient is φ = 26436634422.

The previous prime is 26436634417. The next prime is 26436634453. The reversal of 26436634423 is 32443663462.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 26436634423 - 2⁹ = 26436633911 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 26436634423.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (26436634453) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 13218317211 + 13218317212.

It is an arithmetic number, because the mean of its divisors is an integer number (13218317212).

Almost surely, 2^26436634423 is an apocalyptic number.

26436634423 is a deficient number, since it is larger than the sum of its proper divisors (1).

26436634423 is an equidigital number, since it uses as much as digits as its factorization.

26436634423 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 1492992, while the sum is 43.

The spelling of 26436634423 in words is "twenty-six billion, four hundred thirty-six million, six hundred thirty-four thousand, four hundred twenty-three".