26913664309 has 8 divisors (see below), whose sum is σ = 31179823040. Its totient is φ = 22752842976.

The previous prime is 26913664307. The next prime is 26913664343. The reversal of 26913664309 is 90346631962.

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

It is a cyclic number.

It is not a de Polignac number, because 26913664309 - 2¹ = 26913664307 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 (26913664303) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 26333799 + ... + 26334820.

It is an arithmetic number, because the mean of its divisors is an integer number (3897477880).

Almost surely, 2^26913664309 is an apocalyptic number.

It is an amenable number.

26913664309 is a deficient number, since it is larger than the sum of its proper divisors (4266158731).

26913664309 is an equidigital number, since it uses as much as digits as its factorization.

26913664309 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 52668699.

The product of its (nonzero) digits is 1259712, while the sum is 49.

The spelling of 26913664309 in words is "twenty-six billion, nine hundred thirteen million, six hundred sixty-four thousand, three hundred nine".