115665165507 has 8 divisors (see below), whose sum is σ = 159538159440. Its totient is φ = 74451140960.

The previous prime is 115665165493. The next prime is 115665165521. The reversal of 115665165507 is 705561566511.

It is an interprime number because it is at equal distance from previous prime (115665165493) and next prime (115665165521).

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 115665165507 - 2⁷ = 115665165379 is a prime.

It is not an unprimeable number, because it can be changed into a prime (115665165557) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 664742244 + ... + 664742417.

It is an arithmetic number, because the mean of its divisors is an integer number (19942269930).

Almost surely, 2^115665165507 is an apocalyptic number.

115665165507 is a deficient number, since it is larger than the sum of its proper divisors (43872993933).

115665165507 is a wasteful number, since it uses less digits than its factorization.

115665165507 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1329484693.

The product of its (nonzero) digits is 945000, while the sum is 48.

The spelling of 115665165507 in words is "one hundred fifteen billion, six hundred sixty-five million, one hundred sixty-five thousand, five hundred seven".