12968943645 has 32 divisors (see below), whose sum is σ = 24745715712. Its totient is φ = 5670891072.

The previous prime is 12968943587. The next prime is 12968943661. The reversal of 12968943645 is 54634986921.

It is not a de Polignac number, because 12968943645 - 2⁷ = 12968943517 is a prime.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 2682667 + ... + 2687496.

It is an arithmetic number, because the mean of its divisors is an integer number (773303616).

Almost surely, 2^12968943645 is an apocalyptic number.

12968943645 is a gapful number since it is divisible by the number (15) formed by its first and last digit.

It is an amenable number.

12968943645 is a deficient number, since it is larger than the sum of its proper divisors (11776772067).

12968943645 is a wasteful number, since it uses less digits than its factorization.

12968943645 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5370201.

The product of its digits is 11197440, while the sum is 57.

The spelling of 12968943645 in words is "twelve billion, nine hundred sixty-eight million, nine hundred forty-three thousand, six hundred forty-five".