26219495647 has 2 divisors, whose sum is σ = 26219495648. Its totient is φ = 26219495646.

The previous prime is 26219495597. The next prime is 26219495669. The reversal of 26219495647 is 74659491262.

It is a strong prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-26219495647 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (26219495047) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 13109747823 + 13109747824.

It is an arithmetic number, because the mean of its divisors is an integer number (13109747824).

Almost surely, 2^26219495647 is an apocalyptic number.

26219495647 is a deficient number, since it is larger than the sum of its proper divisors (1).

26219495647 is an equidigital number, since it uses as much as digits as its factorization.

26219495647 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 6531840, while the sum is 55.

The spelling of 26219495647 in words is "twenty-six billion, two hundred nineteen million, four hundred ninety-five thousand, six hundred forty-seven".