115555743099 has 16 divisors (see below), whose sum is σ = 171947859840. Its totient is φ = 76697787240.

The previous prime is 115555743077. The next prime is 115555743133. The reversal of 115555743099 is 990347555511.

It is a happy number.

115555743099 is a `hidden beast` number, since 1 + 1 + 55 + 557 + 4 + 30 + 9 + 9 = 666.

It is not a de Polignac number, because 115555743099 - 2¹² = 115555739003 is a prime.

It is a super-2 number, since 2×115555743099² (a number of 23 digits) contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (115555743299) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 9420837 + ... + 9433094.

It is an arithmetic number, because the mean of its divisors is an integer number (10746741240).

Almost surely, 2^115555743099 is an apocalyptic number.

115555743099 is a deficient number, since it is larger than the sum of its proper divisors (56392116741).

115555743099 is a wasteful number, since it uses less digits than its factorization.

115555743099 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 18854167 (or 18854161 counting only the distinct ones).

The product of its (nonzero) digits is 4252500, while the sum is 54.

The spelling of 115555743099 in words is "one hundred fifteen billion, five hundred fifty-five million, seven hundred forty-three thousand, ninety-nine".