12723135320 has 128 divisors (see below), whose sum is σ = 33830092800. Its totient is φ = 4214246400.

The previous prime is 12723135301. The next prime is 12723135343. The reversal of 12723135320 is 2353132721.

It is a congruent number.

It is an unprimeable number.

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 31 ways as a sum of consecutive naturals, for example, 7906676 + ... + 7908284.

It is an arithmetic number, because the mean of its divisors is an integer number (264297600).

Almost surely, 2^12723135320 is an apocalyptic number.

12723135320 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 12723135320, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (16915046400).

12723135320 is an abundant number, since it is smaller than the sum of its proper divisors (21106957480).

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

12723135320 is a wasteful number, since it uses less digits than its factorization.

12723135320 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2569 (or 2565 counting only the distinct ones).

The product of its (nonzero) digits is 7560, while the sum is 29.

The spelling of 12723135320 in words is "twelve billion, seven hundred twenty-three million, one hundred thirty-five thousand, three hundred twenty".