26531219251 has 2 divisors, whose sum is σ = 26531219252. Its totient is φ = 26531219250.

The previous prime is 26531219227. The next prime is 26531219261. The reversal of 26531219251 is 15291213562.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 26531219251 - 2⁷ = 26531219123 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 26531219251.

It is not a weakly prime, because it can be changed into another prime (26531219261) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 13265609625 + 13265609626.

It is an arithmetic number, because the mean of its divisors is an integer number (13265609626).

Almost surely, 2^26531219251 is an apocalyptic number.

26531219251 is a deficient number, since it is larger than the sum of its proper divisors (1).

26531219251 is an equidigital number, since it uses as much as digits as its factorization.

26531219251 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 32400, while the sum is 37.

The spelling of 26531219251 in words is "twenty-six billion, five hundred thirty-one million, two hundred nineteen thousand, two hundred fifty-one".