27770011155 has 24 divisors (see below), whose sum is σ = 48144144048. Its totient is φ = 14807762496.

The previous prime is 27770011151. The next prime is 27770011187. The reversal of 27770011155 is 55111007772.

It is not a de Polignac number, because 27770011155 - 2² = 27770011151 is a prime.

It is not an unprimeable number, because it can be changed into a prime (27770011151) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 181569 + ... + 297501.

It is an arithmetic number, because the mean of its divisors is an integer number (2006006002).

Almost surely, 2^27770011155 is an apocalyptic number.

27770011155 is a deficient number, since it is larger than the sum of its proper divisors (20374132893).

27770011155 is a wasteful number, since it uses less digits than its factorization.

27770011155 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 121267 (or 121264 counting only the distinct ones).

The product of its (nonzero) digits is 17150, while the sum is 36.

The spelling of 27770011155 in words is "twenty-seven billion, seven hundred seventy million, eleven thousand, one hundred fifty-five".