26642607287 has 2 divisors, whose sum is σ = 26642607288. Its totient is φ = 26642607286.

The previous prime is 26642607209. The next prime is 26642607289. The reversal of 26642607287 is 78270624662.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 26642607287 - 2²⁰ = 26641558711 is a prime.

Together with 26642607289, it forms a pair of twin primes.

It is a Chen prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (26642607289) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 13321303643 + 13321303644.

It is an arithmetic number, because the mean of its divisors is an integer number (13321303644).

Almost surely, 2^26642607287 is an apocalyptic number.

26642607287 is a deficient number, since it is larger than the sum of its proper divisors (1).

26642607287 is an equidigital number, since it uses as much as digits as its factorization.

26642607287 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 2709504, while the sum is 50.

The spelling of 26642607287 in words is "twenty-six billion, six hundred forty-two million, six hundred seven thousand, two hundred eighty-seven".