26873428209 has 8 divisors (see below), whose sum is σ = 36001054752. Its totient is φ = 17830710240.

The previous prime is 26873428157. The next prime is 26873428291. The reversal of 26873428209 is 90282437862.

It is a happy number.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 26873428209 - 2¹⁶ = 26873362673 is a prime.

It is a super-2 number, since 2×26873428209² (a number of 22 digits) contains 22 as substring.

It is a Curzon number.

It is not an unprimeable number, because it can be changed into a prime (26873428409) 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 7 ways as a sum of consecutive naturals, for example, 21226404 + ... + 21227669.

It is an arithmetic number, because the mean of its divisors is an integer number (4500131844).

Almost surely, 2^26873428209 is an apocalyptic number.

It is an amenable number.

26873428209 is a deficient number, since it is larger than the sum of its proper divisors (9127626543).

26873428209 is a wasteful number, since it uses less digits than its factorization.

26873428209 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 42454287.

The product of its (nonzero) digits is 2322432, while the sum is 51.

The spelling of 26873428209 in words is "twenty-six billion, eight hundred seventy-three million, four hundred twenty-eight thousand, two hundred nine".