12738724231520 has 96 divisors (see below), whose sum is σ = 36204795244800. Its totient is φ = 4137690871296.

The previous prime is 12738724231469. The next prime is 12738724231531. The reversal of 12738724231520 is 2513242783721.

It is a happy number.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 299290850 + ... + 299333409.

It is an arithmetic number, because the mean of its divisors is an integer number (377133283800).

Almost surely, 2^{12738724231520} is an apocalyptic number.

12738724231520 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

12738724231520 is an abundant number, since it is smaller than the sum of its proper divisors (23466071013280).

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

12738724231520 is a wasteful number, since it uses less digits than its factorization.

12738724231520 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 598624300 (or 598624292 counting only the distinct ones).

The product of its (nonzero) digits is 1128960, while the sum is 47.

The spelling of 12738724231520 in words is "twelve trillion, seven hundred thirty-eight billion, seven hundred twenty-four million, two hundred thirty-one thousand, five hundred twenty".