115656501649 has 8 divisors (see below), whose sum is σ = 124570467560. Its totient is φ = 106745008896.

The previous prime is 115656501619. The next prime is 115656501721. The reversal of 115656501649 is 946105656511.

It can be written as a sum of positive squares in 4 ways, for example, as 1854852624 + 113801649025 = 43068^2 + 337345^2 .

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 115656501649 - 2²¹ = 115654404497 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (115656501619) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 520584 + ... + 708745.

It is an arithmetic number, because the mean of its divisors is an integer number (15571308445).

Almost surely, 2^115656501649 is an apocalyptic number.

It is an amenable number.

115656501649 is a deficient number, since it is larger than the sum of its proper divisors (8913965911).

115656501649 is a wasteful number, since it uses less digits than its factorization.

115656501649 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1236579.

The product of its (nonzero) digits is 972000, while the sum is 49.

The spelling of 115656501649 in words is "one hundred fifteen billion, six hundred fifty-six million, five hundred one thousand, six hundred forty-nine".