115599999999 has 32 divisors (see below), whose sum is σ = 172094275584. Its totient is φ = 68415994080.

The previous prime is 115599999997. The next prime is 115600000037. The reversal of 115599999999 is 999999995511.

It is a happy number.

It is a Cunningham number, because it is equal to 340000²-1.

It is not a de Polignac number, because 115599999999 - 2¹ = 115599999997 is a prime.

115599999999 is a modest number, since divided by 999999 gives 115599 as remainder.

It is a plaindrome in base 10.

It is a zygodrome in base 10.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (115599999997) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 11214882 + ... + 11225184.

It is an arithmetic number, because the mean of its divisors is an integer number (5377946112).

Almost surely, 2^115599999999 is an apocalyptic number.

115599999999 is a deficient number, since it is larger than the sum of its proper divisors (56494275585).

115599999999 is a wasteful number, since it uses less digits than its factorization.

115599999999 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 18267.

The product of its digits is 1076168025, while the sum is 84.

The spelling of 115599999999 in words is "one hundred fifteen billion, five hundred ninety-nine million, nine hundred ninety-nine thousand, nine hundred ninety-nine".