27615380899 has 2 divisors, whose sum is σ = 27615380900. Its totient is φ = 27615380898.

The previous prime is 27615380887. The next prime is 27615380921. The reversal of 27615380899 is 99808351672.

It is a weak prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-27615380899 is a prime.

It is not a weakly prime, because it can be changed into another prime (27615300899) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 13807690449 + 13807690450.

It is an arithmetic number, because the mean of its divisors is an integer number (13807690450).

Almost surely, 2^27615380899 is an apocalyptic number.

27615380899 is a deficient number, since it is larger than the sum of its proper divisors (1).

27615380899 is an equidigital number, since it uses as much as digits as its factorization.

27615380899 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 6531840, while the sum is 58.

The spelling of 27615380899 in words is "twenty-seven billion, six hundred fifteen million, three hundred eighty thousand, eight hundred ninety-nine".