26974409447 has 2 divisors, whose sum is σ = 26974409448. Its totient is φ = 26974409446.

The previous prime is 26974409419. The next prime is 26974409477. The reversal of 26974409447 is 74490447962.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 26974409447 - 2⁸ = 26974409191 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 26974409392 and 26974409401.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (26974409417) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 13487204723 + 13487204724.

It is an arithmetic number, because the mean of its divisors is an integer number (13487204724).

Almost surely, 2^26974409447 is an apocalyptic number.

26974409447 is a deficient number, since it is larger than the sum of its proper divisors (1).

26974409447 is an equidigital number, since it uses as much as digits as its factorization.

26974409447 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 12192768, while the sum is 56.

It can be divided in two parts, 2697 and 4409447, that added together give a palindrome (4412144).

The spelling of 26974409447 in words is "twenty-six billion, nine hundred seventy-four million, four hundred nine thousand, four hundred forty-seven".