26864400047 has 2 divisors, whose sum is σ = 26864400048. Its totient is φ = 26864400046.

The previous prime is 26864399983. The next prime is 26864400053. The reversal of 26864400047 is 74000446862.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 26864400047 - 2⁶ = 26864399983 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 26864399977 and 26864400013.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (26864400077) 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, 13432200023 + 13432200024.

It is an arithmetic number, because the mean of its divisors is an integer number (13432200024).

Almost surely, 2^26864400047 is an apocalyptic number.

26864400047 is a deficient number, since it is larger than the sum of its proper divisors (1).

26864400047 is an equidigital number, since it uses as much as digits as its factorization.

26864400047 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 258048, while the sum is 41.

The spelling of 26864400047 in words is "twenty-six billion, eight hundred sixty-four million, four hundred thousand, forty-seven".