115165601111 has 4 divisors (see below), whose sum is σ = 125635201224. Its totient is φ = 104696001000.

The previous prime is 115165601051. The next prime is 115165601137. The reversal of 115165601111 is 111106561511.

It is a happy number.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-115165601111 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (115165604111) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 5234800040 + ... + 5234800061.

It is an arithmetic number, because the mean of its divisors is an integer number (31408800306).

Almost surely, 2^115165601111 is an apocalyptic number.

115165601111 is a gapful number since it is divisible by the number (11) formed by its first and last digit.

115165601111 is a deficient number, since it is larger than the sum of its proper divisors (10469600113).

115165601111 is a wasteful number, since it uses less digits than its factorization.

115165601111 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 10469600112.

The product of its (nonzero) digits is 900, while the sum is 29.

The spelling of 115165601111 in words is "one hundred fifteen billion, one hundred sixty-five million, six hundred one thousand, one hundred eleven".