12806942642 has 64 divisors (see below), whose sum is σ = 21796454400. Its totient is φ = 5603307840.

The previous prime is 12806942597. The next prime is 12806942653. The reversal of 12806942642 is 24624960821.

It is a happy number.

It is a junction number, because it is equal to n+sod(n) for n = 12806942593 and 12806942602.

It is an unprimeable number.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 8849963 + ... + 8851409.

It is an arithmetic number, because the mean of its divisors is an integer number (340569600).

Almost surely, 2^12806942642 is an apocalyptic number.

12806942642 is a deficient number, since it is larger than the sum of its proper divisors (8989511758).

12806942642 is a wasteful number, since it uses less digits than its factorization.

12806942642 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1711.

The product of its (nonzero) digits is 331776, while the sum is 44.

The spelling of 12806942642 in words is "twelve billion, eight hundred six million, nine hundred forty-two thousand, six hundred forty-two".