12738973512 has 64 divisors (see below), whose sum is σ = 31990464000. Its totient is φ = 4227300864.

The previous prime is 12738973493. The next prime is 12738973517. The reversal of 12738973512 is 21537983721.

It is a super-2 number, since 2×12738973512² (a number of 21 digits) contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (12738973517) 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 15 ways as a sum of consecutive naturals, for example, 7241289 + ... + 7243047.

It is an arithmetic number, because the mean of its divisors is an integer number (499851000).

Almost surely, 2^12738973512 is an apocalyptic number.

12738973512 is a gapful number since it is divisible by the number (12) formed by its first and last digit.

It is an amenable number.

12738973512 is an abundant number, since it is smaller than the sum of its proper divisors (19251490488).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

12738973512 is a wasteful number, since it uses less digits than its factorization.

12738973512 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2950 (or 2946 counting only the distinct ones).

The product of its digits is 635040, while the sum is 48.

The spelling of 12738973512 in words is "twelve billion, seven hundred thirty-eight million, nine hundred seventy-three thousand, five hundred twelve".