12646679983 has 8 divisors (see below), whose sum is σ = 14585948960. Its totient is φ = 10740561120.

The previous prime is 12646679921. The next prime is 12646679993. The reversal of 12646679983 is 38997664621.

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

It is a cyclic number.

It is not a de Polignac number, because 12646679983 - 2²⁹ = 12109809071 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (12646679993) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 8286708 + ... + 8288233.

It is an arithmetic number, because the mean of its divisors is an integer number (1823243620).

Almost surely, 2^12646679983 is an apocalyptic number.

12646679983 is a deficient number, since it is larger than the sum of its proper divisors (1939268977).

12646679983 is a wasteful number, since it uses less digits than its factorization.

12646679983 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 16575057.

The product of its digits is 23514624, while the sum is 61.

The spelling of 12646679983 in words is "twelve billion, six hundred forty-six million, six hundred seventy-nine thousand, nine hundred eighty-three".