27396894509 has 8 divisors (see below), whose sum is σ = 27484816320. Its totient is φ = 27309098656.

The previous prime is 27396894479. The next prime is 27396894517. The reversal of 27396894509 is 90549869372.

It is a happy number.

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

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-27396894509 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 (27396894709) 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, 414272 + ... + 475830.

It is an arithmetic number, because the mean of its divisors is an integer number (3435602040).

Almost surely, 2^27396894509 is an apocalyptic number.

It is an amenable number.

27396894509 is a deficient number, since it is larger than the sum of its proper divisors (87921811).

27396894509 is an equidigital number, since it uses as much as digits as its factorization.

27396894509 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 62979.

The product of its (nonzero) digits is 29393280, while the sum is 62.

The spelling of 27396894509 in words is "twenty-seven billion, three hundred ninety-six million, eight hundred ninety-four thousand, five hundred nine".