12643349874 has 8 divisors (see below), whose sum is σ = 25286699760. Its totient is φ = 4214449956.

The previous prime is 12643349839. The next prime is 12643349881. The reversal of 12643349874 is 47894334621.

It is a happy number.

It is a sphenic number, since it is the product of 3 distinct primes.

12643349874 is an admirable number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1053612484 + ... + 1053612495.

It is an arithmetic number, because the mean of its divisors is an integer number (3160837470).

Almost surely, 2^12643349874 is an apocalyptic number.

12643349874 is a primitive abundant number, since it is smaller than the sum of its proper divisors, none of which is abundant.

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

12643349874 is a wasteful number, since it uses less digits than its factorization.

12643349874 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2107224984.

The product of its digits is 3483648, while the sum is 51.

The spelling of 12643349874 in words is "twelve billion, six hundred forty-three million, three hundred forty-nine thousand, eight hundred seventy-four".