26844090643 has 2 divisors, whose sum is σ = 26844090644. Its totient is φ = 26844090642.

The previous prime is 26844090629. The next prime is 26844090661. The reversal of 26844090643 is 34609044862.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 26844090643 - 2²¹ = 26841993491 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 26844090593 and 26844090602.

It is not a weakly prime, because it can be changed into another prime (26844090683) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 13422045321 + 13422045322.

It is an arithmetic number, because the mean of its divisors is an integer number (13422045322).

Almost surely, 2^26844090643 is an apocalyptic number.

26844090643 is a deficient number, since it is larger than the sum of its proper divisors (1).

26844090643 is an equidigital number, since it uses as much as digits as its factorization.

26844090643 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 995328, while the sum is 46.

The spelling of 26844090643 in words is "twenty-six billion, eight hundred forty-four million, ninety thousand, six hundred forty-three".