26318423987 has 2 divisors, whose sum is σ = 26318423988. Its totient is φ = 26318423986.

The previous prime is 26318423947. The next prime is 26318424001. The reversal of 26318423987 is 78932481362.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 26318423987 - 2¹⁴ = 26318407603 is a prime.

It is not a weakly prime, because it can be changed into another prime (26318423947) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 13159211993 + 13159211994.

It is an arithmetic number, because the mean of its divisors is an integer number (13159211994).

Almost surely, 2^26318423987 is an apocalyptic number.

26318423987 is a deficient number, since it is larger than the sum of its proper divisors (1).

26318423987 is an equidigital number, since it uses as much as digits as its factorization.

26318423987 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 3483648, while the sum is 53.

The spelling of 26318423987 in words is "twenty-six billion, three hundred eighteen million, four hundred twenty-three thousand, nine hundred eighty-seven".