26444613947 has 2 divisors, whose sum is σ = 26444613948. Its totient is φ = 26444613946.

The previous prime is 26444613917. The next prime is 26444613983. The reversal of 26444613947 is 74931644462.

It is a happy number.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 26444613947 - 2¹⁸ = 26444351803 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 26444613895 and 26444613904.

It is not a weakly prime, because it can be changed into another prime (26444613907) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 13222306973 + 13222306974.

It is an arithmetic number, because the mean of its divisors is an integer number (13222306974).

Almost surely, 2^26444613947 is an apocalyptic number.

26444613947 is a deficient number, since it is larger than the sum of its proper divisors (1).

26444613947 is an equidigital number, since it uses as much as digits as its factorization.

26444613947 is an evil number, because the sum of its binary digits is even.

The product of its digits is 3483648, while the sum is 50.

The spelling of 26444613947 in words is "twenty-six billion, four hundred forty-four million, six hundred thirteen thousand, nine hundred forty-seven".