26918049647 has 2 divisors, whose sum is σ = 26918049648. Its totient is φ = 26918049646.

The previous prime is 26918049583. The next prime is 26918049649. The reversal of 26918049647 is 74694081962.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 26918049647 - 2⁶ = 26918049583 is a prime.

Together with 26918049649, it forms a pair of twin primes.

It is a Chen prime.

It is a junction number, because it is equal to n+sod(n) for n = 26918049592 and 26918049601.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (26918049649) 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, 13459024823 + 13459024824.

It is an arithmetic number, because the mean of its divisors is an integer number (13459024824).

Almost surely, 2^26918049647 is an apocalyptic number.

26918049647 is a deficient number, since it is larger than the sum of its proper divisors (1).

26918049647 is an equidigital number, since it uses as much as digits as its factorization.

26918049647 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 5225472, while the sum is 56.

The spelling of 26918049647 in words is "twenty-six billion, nine hundred eighteen million, forty-nine thousand, six hundred forty-seven".