13125440431012 has 48 divisors (see below), whose sum is σ = 29933131132800. Its totient is φ = 4887041812992.

The previous prime is 13125440430983. The next prime is 13125440431043. The reversal of 13125440431012 is 21013404452131.

It is a happy 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, 1060549762 + ... + 1060562137.

It is an arithmetic number, because the mean of its divisors is an integer number (623606898600).

Almost surely, 2^{13125440431012} is an apocalyptic number.

It is an amenable number.

13125440431012 is an abundant number, since it is smaller than the sum of its proper divisors (16807690701788).

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

13125440431012 is a wasteful number, since it uses less digits than its factorization.

13125440431012 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2121111940 (or 2121111938 counting only the distinct ones).

The product of its (nonzero) digits is 11520, while the sum is 31.

Adding to 13125440431012 its reverse (21013404452131), we get a palindrome (34138844883143).

The spelling of 13125440431012 in words is "thirteen trillion, one hundred twenty-five billion, four hundred forty million, four hundred thirty-one thousand, twelve".