12642781496 has 16 divisors (see below), whose sum is σ = 24735877200. Its totient is φ = 6046547584.

The previous prime is 12642781423. The next prime is 12642781513. The reversal of 12642781496 is 69418724621.

It is a congruent 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, 34355201 + ... + 34355568.

It is an arithmetic number, because the mean of its divisors is an integer number (1545992325).

Almost surely, 2^12642781496 is an apocalyptic number.

It is an amenable number.

12642781496 is a deficient number, since it is larger than the sum of its proper divisors (12093095704).

12642781496 is a wasteful number, since it uses less digits than its factorization.

12642781496 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 68710798 (or 68710794 counting only the distinct ones).

The product of its digits is 1161216, while the sum is 50.

The spelling of 12642781496 in words is "twelve billion, six hundred forty-two million, seven hundred eighty-one thousand, four hundred ninety-six".