12471830649 has 12 divisors (see below), whose sum is σ = 19074564756. Its totient is φ = 7825462272.

The previous prime is 12471830647. The next prime is 12471830687. The reversal of 12471830649 is 94603817421.

It can be written as a sum of positive squares in 2 ways, for example, as 8746925625 + 3724905024 = 93525^2 + 61032^2 .

It is not a de Polignac number, because 12471830649 - 2¹ = 12471830647 is a prime.

It is a super-2 number, since 2×12471830649² (a number of 21 digits) contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (12471830647) 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, 40757464 + ... + 40757769.

It is an arithmetic number, because the mean of its divisors is an integer number (1589547063).

Almost surely, 2^12471830649 is an apocalyptic number.

It is an amenable number.

12471830649 is a deficient number, since it is larger than the sum of its proper divisors (6602734107).

12471830649 is a wasteful number, since it uses less digits than its factorization.

12471830649 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 81515256 (or 81515253 counting only the distinct ones).

The product of its (nonzero) digits is 290304, while the sum is 45.

The spelling of 12471830649 in words is "twelve billion, four hundred seventy-one million, eight hundred thirty thousand, six hundred forty-nine".