26944381447 has 2 divisors, whose sum is σ = 26944381448. Its totient is φ = 26944381446.

The previous prime is 26944381439. The next prime is 26944381459. The reversal of 26944381447 is 74418344962.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 26944381447 - 2³ = 26944381439 is a prime.

It is a super-2 number, since 2×26944381447² (a number of 22 digits) contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 26944381394 and 26944381403.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (26944381147) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 13472190723 + 13472190724.

It is an arithmetic number, because the mean of its divisors is an integer number (13472190724).

Almost surely, 2^26944381447 is an apocalyptic number.

26944381447 is a deficient number, since it is larger than the sum of its proper divisors (1).

26944381447 is an equidigital number, since it uses as much as digits as its factorization.

26944381447 is an evil number, because the sum of its binary digits is even.

The product of its digits is 4644864, while the sum is 52.

The spelling of 26944381447 in words is "twenty-six billion, nine hundred forty-four million, three hundred eighty-one thousand, four hundred forty-seven".