12289670642 has 18 divisors (see below), whose sum is σ = 18883543887. Its totient is φ = 5998639836.

The previous prime is 12289670593. The next prime is 12289670689. The reversal of 12289670642 is 24607698221.

It can be written as a sum of positive squares in only one way, i.e., 6144835321 + 6144835321 = 78389^2 + 78389^2 .

It is an ABA number since it can be written as A⋅B^A, here for A=2, B=78389.

It is a Duffinian number.

It is an unprimeable number.

It is a polite number, since it can be written in 8 ways as a sum of consecutive naturals, for example, 6740543 + ... + 6742365.

Almost surely, 2^12289670642 is an apocalyptic number.

12289670642 is a deficient number, since it is larger than the sum of its proper divisors (6593873245).

12289670642 is an frugal number, since it uses more digits than its factorization.

12289670642 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3734 (or 1868 counting only the distinct ones).

The product of its (nonzero) digits is 580608, while the sum is 47.

The spelling of 12289670642 in words is "twelve billion, two hundred eighty-nine million, six hundred seventy thousand, six hundred forty-two".