27780836115 has 16 divisors (see below), whose sum is σ = 45112762368. Its totient is φ = 14595304416.

The previous prime is 27780836101. The next prime is 27780836117. The reversal of 27780836115 is 51163808772.

It is a happy number.

It is not a de Polignac number, because 27780836115 - 2⁴ = 27780836099 is a prime.

It is not an unprimeable number, because it can be changed into a prime (27780836117) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 13820307 + ... + 13822316.

It is an arithmetic number, because the mean of its divisors is an integer number (2819547648).

Almost surely, 2^27780836115 is an apocalyptic number.

27780836115 is a deficient number, since it is larger than the sum of its proper divisors (17331926253).

27780836115 is a wasteful number, since it uses less digits than its factorization.

27780836115 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 27642698.

The product of its (nonzero) digits is 564480, while the sum is 48.

The spelling of 27780836115 in words is "twenty-seven billion, seven hundred eighty million, eight hundred thirty-six thousand, one hundred fifteen".