12446642356 has 12 divisors (see below), whose sum is σ = 22532714820. Its totient is φ = 6008723840.

The previous prime is 12446642353. The next prime is 12446642359. The reversal of 12446642356 is 65324664421.

It is an interprime number because it is at equal distance from previous prime (12446642353) and next prime (12446642359).

It can be written as a sum of positive squares in 2 ways, for example, as 6159738256 + 6286904100 = 78484^2 + 79290^2 .

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (12446642353) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 53649205 + ... + 53649436.

It is an arithmetic number, because the mean of its divisors is an integer number (1877726235).

Almost surely, 2^12446642356 is an apocalyptic number.

It is an amenable number.

12446642356 is a deficient number, since it is larger than the sum of its proper divisors (10086072464).

12446642356 is a wasteful number, since it uses less digits than its factorization.

12446642356 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 107298674 (or 107298672 counting only the distinct ones).

The product of its digits is 829440, while the sum is 43.

The spelling of 12446642356 in words is "twelve billion, four hundred forty-six million, six hundred forty-two thousand, three hundred fifty-six".