26831734691 has 2 divisors, whose sum is σ = 26831734692. Its totient is φ = 26831734690.

The previous prime is 26831734687. The next prime is 26831734693. The reversal of 26831734691 is 19643713862.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 26831734691 - 2² = 26831734687 is a prime.

Together with 26831734693, it forms a pair of twin primes.

It is a Chen prime.

It is not a weakly prime, because it can be changed into another prime (26831734693) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 13415867345 + 13415867346.

It is an arithmetic number, because the mean of its divisors is an integer number (13415867346).

Almost surely, 2^26831734691 is an apocalyptic number.

26831734691 is a deficient number, since it is larger than the sum of its proper divisors (1).

26831734691 is an equidigital number, since it uses as much as digits as its factorization.

26831734691 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 1306368, while the sum is 50.

The spelling of 26831734691 in words is "twenty-six billion, eight hundred thirty-one million, seven hundred thirty-four thousand, six hundred ninety-one".