115155565899 has 32 divisors (see below), whose sum is σ = 171677899008. Its totient is φ = 68051904000.

The previous prime is 115155565879. The next prime is 115155565913. The reversal of 115155565899 is 998565551511.

It is not a de Polignac number, because 115155565899 - 2⁷ = 115155565771 is a prime.

It is not an unprimeable number, because it can be changed into a prime (115155565879) 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, 2566044 + ... + 2610534.

It is an arithmetic number, because the mean of its divisors is an integer number (5364934344).

Almost surely, 2^115155565899 is an apocalyptic number.

115155565899 is a deficient number, since it is larger than the sum of its proper divisors (56522333109).

115155565899 is a wasteful number, since it uses less digits than its factorization.

115155565899 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 46459.

The product of its digits is 12150000, while the sum is 60.

The spelling of 115155565899 in words is "one hundred fifteen billion, one hundred fifty-five million, five hundred sixty-five thousand, eight hundred ninety-nine".