12296561481 has 20 divisors (see below), whose sum is σ = 18423485652. Its totient is φ = 8173363968.

The previous prime is 12296561477. The next prime is 12296561489. The reversal of 12296561481 is 18416569221.

12296561481 is a `hidden beast` number, since 1 + 2 + 2 + 9 + 6 + 561 + 4 + 81 = 666.

It can be written as a sum of positive squares in 2 ways, for example, as 1582448400 + 10714113081 = 39780^2 + 103509^2 .

It is not a de Polignac number, because 12296561481 - 2² = 12296561477 is a prime.

It is a super-2 number, since 2×12296561481² (a number of 21 digits) contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (12296561489) 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 19 ways as a sum of consecutive naturals, for example, 197940 + ... + 252533.

Almost surely, 2^12296561481 is an apocalyptic number.

It is an amenable number.

12296561481 is a deficient number, since it is larger than the sum of its proper divisors (6126924171).

12296561481 is an equidigital number, since it uses as much as digits as its factorization.

12296561481 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 450822 (or 450813 counting only the distinct ones).

The product of its digits is 207360, while the sum is 45.

The spelling of 12296561481 in words is "twelve billion, two hundred ninety-six million, five hundred sixty-one thousand, four hundred eighty-one".