12985657744 has 20 divisors (see below), whose sum is σ = 25264990080. Its totient is φ = 6465660320.

The previous prime is 12985657703. The next prime is 12985657747. The reversal of 12985657744 is 44775658921.

It is not an unprimeable number, because it can be changed into a prime (12985657747) by changing a digit.

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 3 ways as a sum of consecutive naturals, for example, 1694092 + ... + 1701739.

It is an arithmetic number, because the mean of its divisors is an integer number (1263249504).

Almost surely, 2^12985657744 is an apocalyptic number.

It is an amenable number.

12985657744 is a deficient number, since it is larger than the sum of its proper divisors (12279332336).

12985657744 is a wasteful number, since it uses less digits than its factorization.

12985657744 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3396078 (or 3396072 counting only the distinct ones).

The product of its digits is 16934400, while the sum is 58.

The spelling of 12985657744 in words is "twelve billion, nine hundred eighty-five million, six hundred fifty-seven thousand, seven hundred forty-four".