26840263673 has 2 divisors, whose sum is σ = 26840263674. Its totient is φ = 26840263672.

The previous prime is 26840263631. The next prime is 26840263687. The reversal of 26840263673 is 37636204862.

It is a happy number.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 26488213504 + 352050169 = 162752^2 + 18763^2 .

It is a cyclic number.

It is not a de Polignac number, because 26840263673 - 2³⁴ = 9660394489 is a prime.

It is not a weakly prime, because it can be changed into another prime (26840263603) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 13420131836 + 13420131837.

It is an arithmetic number, because the mean of its divisors is an integer number (13420131837).

Almost surely, 2^26840263673 is an apocalyptic number.

It is an amenable number.

26840263673 is a deficient number, since it is larger than the sum of its proper divisors (1).

26840263673 is an equidigital number, since it uses as much as digits as its factorization.

26840263673 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 1741824, while the sum is 47.

The spelling of 26840263673 in words is "twenty-six billion, eight hundred forty million, two hundred sixty-three thousand, six hundred seventy-three".