115665715206 has 16 divisors (see below), whose sum is σ = 257034922800. Its totient is φ = 38555238384.

The previous prime is 115665715181. The next prime is 115665715211. The reversal of 115665715206 is 602517566511.

It is a happy number.

115665715206 is a `hidden beast` number, since 1 + 1 + 56 + 6 + 5 + 71 + 520 + 6 = 666.

It is a Curzon number.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 1070978791 + ... + 1070978898.

It is an arithmetic number, because the mean of its divisors is an integer number (16064682675).

Almost surely, 2^115665715206 is an apocalyptic number.

115665715206 is an abundant number, since it is smaller than the sum of its proper divisors (141369207594).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

115665715206 is a wasteful number, since it uses less digits than its factorization.

115665715206 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2141957700 (or 2141957694 counting only the distinct ones).

The product of its (nonzero) digits is 378000, while the sum is 45.

The spelling of 115665715206 in words is "one hundred fifteen billion, six hundred sixty-five million, seven hundred fifteen thousand, two hundred six".