12981757473 has 12 divisors (see below), whose sum is σ = 18757140688. Its totient is φ = 8651868120.

The previous prime is 12981757469. The next prime is 12981757541. The reversal of 12981757473 is 37475718921.

12981757473 is a `hidden beast` number, since 1 + 29 + 81 + 75 + 7 + 473 = 666.

It is not a de Polignac number, because 12981757473 - 2² = 12981757469 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (12981757573) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 188323 + ... + 247848.

Almost surely, 2^12981757473 is an apocalyptic number.

It is an amenable number.

12981757473 is a deficient number, since it is larger than the sum of its proper divisors (5775383215).

12981757473 is a wasteful number, since it uses less digits than its factorization.

12981757473 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 439484 (or 439481 counting only the distinct ones).

The product of its digits is 2963520, while the sum is 54.

The spelling of 12981757473 in words is "twelve billion, nine hundred eighty-one million, seven hundred fifty-seven thousand, four hundred seventy-three".