27309692813 has 8 divisors (see below), whose sum is σ = 29813322168. Its totient is φ = 24863618304.

The previous prime is 27309692803. The next prime is 27309692833. The reversal of 27309692813 is 31829690372.

It is a happy number.

It can be written as a sum of positive squares in 4 ways, for example, as 7900187689 + 19409505124 = 88883^2 + 139318^2 .

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 27309692813 - 2¹⁰ = 27309691789 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 (27309692803) 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, 14387720 + ... + 14389617.

It is an arithmetic number, because the mean of its divisors is an integer number (3726665271).

Almost surely, 2^27309692813 is an apocalyptic number.

It is an amenable number.

27309692813 is a deficient number, since it is larger than the sum of its proper divisors (2503629355).

27309692813 is a wasteful number, since it uses less digits than its factorization.

27309692813 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 28777423.

The product of its (nonzero) digits is 979776, while the sum is 50.

The spelling of 27309692813 in words is "twenty-seven billion, three hundred nine million, six hundred ninety-two thousand, eight hundred thirteen".