12304440315261 has 12 divisors (see below), whose sum is σ = 18253433981692. Its totient is φ = 7981258582656.

The previous prime is 12304440315247. The next prime is 12304440315269. The reversal of 12304440315261 is 16251304440321.

12304440315261 is a `hidden beast` number, since 1 + 2 + 3 + 0 + 4 + 440 + 3 + 152 + 61 = 666.

It can be written as a sum of positive squares in 2 ways, for example, as 9572180083236 + 2732260232025 = 3093894^2 + 1652955^2 .

It is not a de Polignac number, because 12304440315261 - 2¹⁴ = 12304440298877 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 (12304440315269) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 18475135276 + ... + 18475135941.

Almost surely, 2^{12304440315261} is an apocalyptic number.

It is an amenable number.

12304440315261 is a deficient number, since it is larger than the sum of its proper divisors (5948993666431).

12304440315261 is a wasteful number, since it uses less digits than its factorization.

12304440315261 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 36950271260 (or 36950271257 counting only the distinct ones).

The product of its (nonzero) digits is 69120, while the sum is 36.

Adding to 12304440315261 its reverse (16251304440321), we get a palindrome (28555744755582).

The spelling of 12304440315261 in words is "twelve trillion, three hundred four billion, four hundred forty million, three hundred fifteen thousand, two hundred sixty-one".