12745984734 has 96 divisors (see below), whose sum is σ = 32280228864. Its totient is φ = 3559308480.

The previous prime is 12745984717. The next prime is 12745984747. The reversal of 12745984734 is 43748954721.

12745984734 is a `hidden beast` number, since 1 + 2 + 7 + 4 + 598 + 47 + 3 + 4 = 666.

It is a super-2 number, since 2×12745984734² (a number of 21 digits) contains 22 as substring.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 1806217 + ... + 1813259.

It is an arithmetic number, because the mean of its divisors is an integer number (336252384).

Almost surely, 2^12745984734 is an apocalyptic number.

12745984734 is a gapful number since it is divisible by the number (14) formed by its first and last digit.

It is a practical number, because each smaller number is the sum of distinct divisors of 12745984734, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (16140114432).

12745984734 is an abundant number, since it is smaller than the sum of its proper divisors (19534244130).

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

12745984734 is a wasteful number, since it uses less digits than its factorization.

12745984734 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 7382 (or 7379 counting only the distinct ones).

The product of its digits is 6773760, while the sum is 54.

The spelling of 12745984734 in words is "twelve billion, seven hundred forty-five million, nine hundred eighty-four thousand, seven hundred thirty-four".