115656029109 has 12 divisors (see below), whose sum is σ = 168780964716. Its totient is φ = 76309132032.

The previous prime is 115656029101. The next prime is 115656029117. The reversal of 115656029109 is 901920656511.

It is a happy number.

115656029109 is a `hidden beast` number, since 1 + 1 + 56 + 560 + 29 + 10 + 9 = 666.

It is an interprime number because it is at equal distance from previous prime (115656029101) and next prime (115656029117).

It can be written as a sum of positive squares in 2 ways, for example, as 90226942884 + 25429086225 = 300378^2 + 159465^2 .

It is not a de Polignac number, because 115656029109 - 2³ = 115656029101 is a prime.

It is a hoax number, since the sum of its digits (45) coincides with the sum of the digits of its distinct prime factors.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (115656029101) 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 11 ways as a sum of consecutive naturals, for example, 66239694 + ... + 66241439.

It is an arithmetic number, because the mean of its divisors is an integer number (14065080393).

Almost surely, 2^115656029109 is an apocalyptic number.

It is an amenable number.

115656029109 is a deficient number, since it is larger than the sum of its proper divisors (53124935607).

115656029109 is a wasteful number, since it uses less digits than its factorization.

115656029109 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 132481236 (or 132481233 counting only the distinct ones).

The product of its (nonzero) digits is 145800, while the sum is 45.

The spelling of 115656029109 in words is "one hundred fifteen billion, six hundred fifty-six million, twenty-nine thousand, one hundred nine".