26131799227511 has 4 divisors (see below), whose sum is σ = 26134540430712. Its totient is φ = 26129058024312.

The previous prime is 26131799227507. The next prime is 26131799227543. The reversal of 26131799227511 is 11572299713162.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 26131799227511 - 2² = 26131799227507 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (26131799221511) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1370587301 + ... + 1370606366.

It is an arithmetic number, because the mean of its divisors is an integer number (6533635107678).

Almost surely, 2^{26131799227511} is an apocalyptic number.

26131799227511 is a deficient number, since it is larger than the sum of its proper divisors (2741203201).

26131799227511 is an equidigital number, since it uses as much as digits as its factorization.

26131799227511 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2741203200.

The product of its digits is 2857680, while the sum is 56.

The spelling of 26131799227511 in words is "twenty-six trillion, one hundred thirty-one billion, seven hundred ninety-nine million, two hundred twenty-seven thousand, five hundred eleven".