26857275899 has 2 divisors, whose sum is σ = 26857275900. Its totient is φ = 26857275898.

The previous prime is 26857275773. The next prime is 26857275947. The reversal of 26857275899 is 99857275862.

It is a strong prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-26857275899 is a prime.

It is not a weakly prime, because it can be changed into another prime (26857275299) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 13428637949 + 13428637950.

It is an arithmetic number, because the mean of its divisors is an integer number (13428637950).

Almost surely, 2^26857275899 is an apocalyptic number.

26857275899 is a deficient number, since it is larger than the sum of its proper divisors (1).

26857275899 is an equidigital number, since it uses as much as digits as its factorization.

26857275899 is an evil number, because the sum of its binary digits is even.

The product of its digits is 152409600, while the sum is 68.

The spelling of 26857275899 in words is "twenty-six billion, eight hundred fifty-seven million, two hundred seventy-five thousand, eight hundred ninety-nine".