115665165561156 has 12 divisors (see below), whose sum is σ = 269885386309392. Its totient is φ = 38555055187048.

The previous prime is 115665165561149. The next prime is 115665165561191. The reversal of 115665165561156 is 651165561566511.

It is a happy number.

It is a tau number, because it is divible by the number of its divisors (12).

It is a self number, because there is not a number n which added to its sum of digits gives 115665165561156.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 4819381898370 + ... + 4819381898393.

It is an arithmetic number, because the mean of its divisors is an integer number (22490448859116).

Almost surely, 2^{115665165561156} is an apocalyptic number.

It is an amenable number.

115665165561156 is an abundant number, since it is smaller than the sum of its proper divisors (154220220748236).

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

115665165561156 is a wasteful number, since it uses less digits than its factorization.

115665165561156 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 9638763796770 (or 9638763796768 counting only the distinct ones).

The product of its digits is 24300000, while the sum is 60.

The spelling of 115665165561156 in words is "one hundred fifteen trillion, six hundred sixty-five billion, one hundred sixty-five million, five hundred sixty-one thousand, one hundred fifty-six".