26217192887 has 2 divisors, whose sum is σ = 26217192888. Its totient is φ = 26217192886.

The previous prime is 26217192877. The next prime is 26217192913. The reversal of 26217192887 is 78829171262.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 26217192887 - 2¹⁰ = 26217191863 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (26217192877) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 13108596443 + 13108596444.

It is an arithmetic number, because the mean of its divisors is an integer number (13108596444).

Almost surely, 2^26217192887 is an apocalyptic number.

26217192887 is a deficient number, since it is larger than the sum of its proper divisors (1).

26217192887 is an equidigital number, since it uses as much as digits as its factorization.

26217192887 is an evil number, because the sum of its binary digits is even.

The product of its digits is 1354752, while the sum is 53.

The spelling of 26217192887 in words is "twenty-six billion, two hundred seventeen million, one hundred ninety-two thousand, eight hundred eighty-seven".