26446641009 has 16 divisors (see below), whose sum is σ = 36185688000. Its totient is φ = 17171695296.

The previous prime is 26446640993. The next prime is 26446641029. The reversal of 26446641009 is 90014664462.

It is not a de Polignac number, because 26446641009 - 2⁴ = 26446640993 is a prime.

It is a Curzon number.

It is not an unprimeable number, because it can be changed into a prime (26446641029) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 248694 + ... + 338735.

It is an arithmetic number, because the mean of its divisors is an integer number (2261605500).

Almost surely, 2^26446641009 is an apocalyptic number.

It is an amenable number.

26446641009 is a deficient number, since it is larger than the sum of its proper divisors (9739046991).

26446641009 is a wasteful number, since it uses less digits than its factorization.

26446641009 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 587824.

The product of its (nonzero) digits is 248832, while the sum is 42.

The spelling of 26446641009 in words is "twenty-six billion, four hundred forty-six million, six hundred forty-one thousand, nine".