26879198431 has 2 divisors, whose sum is σ = 26879198432. Its totient is φ = 26879198430.

The previous prime is 26879198429. The next prime is 26879198441. The reversal of 26879198431 is 13489197862.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 26879198431 - 2¹ = 26879198429 is a prime.

It is a super-2 number, since 2×26879198431² (a number of 22 digits) contains 22 as substring.

Together with 26879198429, it forms a pair of twin primes.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (26879198441) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 13439599215 + 13439599216.

It is an arithmetic number, because the mean of its divisors is an integer number (13439599216).

Almost surely, 2^26879198431 is an apocalyptic number.

26879198431 is a deficient number, since it is larger than the sum of its proper divisors (1).

26879198431 is an equidigital number, since it uses as much as digits as its factorization.

26879198431 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 5225472, while the sum is 58.

The spelling of 26879198431 in words is "twenty-six billion, eight hundred seventy-nine million, one hundred ninety-eight thousand, four hundred thirty-one".