12423561651 has 32 divisors (see below), whose sum is σ = 18506442240. Its totient is φ = 8236965600.

The previous prime is 12423561607. The next prime is 12423561679. The reversal of 12423561651 is 15616532421.

12423561651 is a `hidden beast` number, since 1 + 2 + 4 + 2 + 35 + 616 + 5 + 1 = 666.

It is not a de Polignac number, because 12423561651 - 2⁶ = 12423561587 is a prime.

It is not an unprimeable number, because it can be changed into a prime (12423569651) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 5828856 + ... + 5830986.

It is an arithmetic number, because the mean of its divisors is an integer number (578326320).

Almost surely, 2^12423561651 is an apocalyptic number.

12423561651 is a deficient number, since it is larger than the sum of its proper divisors (6082880589).

12423561651 is a wasteful number, since it uses less digits than its factorization.

12423561651 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3224 (or 3218 counting only the distinct ones).

The product of its digits is 43200, while the sum is 36.

The spelling of 12423561651 in words is "twelve billion, four hundred twenty-three million, five hundred sixty-one thousand, six hundred fifty-one".