115729666901 has 4 divisors (see below), whose sum is σ = 119720345100. Its totient is φ = 111738988704.

The previous prime is 115729666883. The next prime is 115729666903. The reversal of 115729666901 is 109666927511.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 109666927511 = 7717 ⋅14211083.

It can be written as a sum of positive squares in 2 ways, for example, as 19831680625 + 95897986276 = 140825^2 + 309674^2 .

It is a de Polignac number, because none of the positive numbers 2^k-115729666901 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (115729666903) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1995339056 + ... + 1995339113.

It is an arithmetic number, because the mean of its divisors is an integer number (29930086275).

Almost surely, 2^115729666901 is an apocalyptic number.

It is an amenable number.

115729666901 is a deficient number, since it is larger than the sum of its proper divisors (3990678199).

115729666901 is an equidigital number, since it uses as much as digits as its factorization.

115729666901 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3990678198.

The product of its (nonzero) digits is 1224720, while the sum is 53.

The spelling of 115729666901 in words is "one hundred fifteen billion, seven hundred twenty-nine million, six hundred sixty-six thousand, nine hundred one".