26827000309 has 4 divisors (see below), whose sum is σ = 26967456000. Its totient is φ = 26686544620.

The previous prime is 26827000307. The next prime is 26827000349. The reversal of 26827000309 is 90300072862.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 26827000309 - 2¹ = 26827000307 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (26827000307) 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 3 ways as a sum of consecutive naturals, for example, 70227559 + ... + 70227940.

It is an arithmetic number, because the mean of its divisors is an integer number (6741864000).

Almost surely, 2^26827000309 is an apocalyptic number.

It is an amenable number.

26827000309 is a deficient number, since it is larger than the sum of its proper divisors (140455691).

26827000309 is a wasteful number, since it uses less digits than its factorization.

26827000309 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 140455690.

The product of its (nonzero) digits is 36288, while the sum is 37.

The spelling of 26827000309 in words is "twenty-six billion, eight hundred twenty-seven million, three hundred nine", and thus it is an aban number.