113665402449 has 27 divisors (see below), whose sum is σ = 168346919377. Its totient is φ = 73901745600.

The previous prime is 113665402447. The next prime is 113665402451. The reversal of 113665402449 is 944204566311.

The square root of 113665402449 is 337143.

It is a perfect power (a square), and thus also a powerful number.

113665402449 is a `hidden beast` number, since 1 + 1 + 3 + 66 + 540 + 2 + 4 + 49 = 666.

It is an interprime number because it is at equal distance from previous prime (113665402447) and next prime (113665402451).

It can be written as a sum of positive squares in 4 ways, for example, as 55574762049 + 58090640400 = 235743^2 + 241020^2 .

It is not a de Polignac number, because 113665402449 - 2¹ = 113665402447 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (113665402441) by changing a digit.

It is a polite number, since it can be written in 26 ways as a sum of consecutive naturals, for example, 41467219 + ... + 41469959.

Almost surely, 2^113665402449 is an apocalyptic number.

113665402449 is the 337143-rd square number.

113665402449 is the 168572-nd centered octagonal number.

It is an amenable number.

113665402449 is a deficient number, since it is larger than the sum of its proper divisors (54681516928).

113665402449 is an frugal number, since it uses more digits than its factorization.

113665402449 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5570 (or 2785 counting only the distinct ones).

The product of its (nonzero) digits is 622080, while the sum is 45.

The spelling of 113665402449 in words is "one hundred thirteen billion, six hundred sixty-five million, four hundred two thousand, four hundred forty-nine".