115155565959 has 64 divisors (see below), whose sum is σ = 188954240000. Its totient is φ = 62183116800.

The previous prime is 115155565949. The next prime is 115155565979. The reversal of 115155565959 is 959565551511.

It is not a de Polignac number, because 115155565959 - 2¹¹ = 115155563911 is a prime.

It is a Smith number, since the sum of its digits (57) coincides with the sum of the digits of its prime factors.

It is a Harshad number since it is a multiple of its sum of digits (57).

It is a junction number, because it is equal to n+sod(n) for n = 115155565899 and 115155565908.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (115155565949) by changing a digit.

It is a polite number, since it can be written in 63 ways as a sum of consecutive naturals, for example, 7989159 + ... + 8003559.

It is an arithmetic number, because the mean of its divisors is an integer number (2952410000).

Almost surely, 2^115155565959 is an apocalyptic number.

115155565959 is a gapful number since it is divisible by the number (19) formed by its first and last digit.

115155565959 is a deficient number, since it is larger than the sum of its proper divisors (73798674041).

115155565959 is a wasteful number, since it uses less digits than its factorization.

115155565959 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 14853 (or 14839 counting only the distinct ones).

The product of its digits is 7593750, while the sum is 57.

The spelling of 115155565959 in words is "one hundred fifteen billion, one hundred fifty-five million, five hundred sixty-five thousand, nine hundred fifty-nine".