13125440431044 has 24 divisors (see below), whose sum is σ = 34028919636320. Its totient is φ = 4375146810312.

The previous prime is 13125440431043. The next prime is 13125440431079. The reversal of 13125440431044 is 44013404452131.

It is a happy number.

13125440431044 is a `hidden beast` number, since 1 + 3 + 1 + 2 + 544 + 0 + 4 + 3 + 104 + 4 = 666.

It is a Harshad number since it is a multiple of its sum of digits (36).

It is not an unprimeable number, because it can be changed into a prime (13125440431043) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 60765927814 + ... + 60765928029.

Almost surely, 2^{13125440431044} is an apocalyptic number.

It is an amenable number.

13125440431044 is an abundant number, since it is smaller than the sum of its proper divisors (20903479205276).

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

13125440431044 is a wasteful number, since it uses less digits than its factorization.

13125440431044 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 121531855856 (or 121531855848 counting only the distinct ones).

The product of its (nonzero) digits is 92160, while the sum is 36.

Adding to 13125440431044 its reverse (44013404452131), we get a palindrome (57138844883175).

The spelling of 13125440431044 in words is "thirteen trillion, one hundred twenty-five billion, four hundred forty million, four hundred thirty-one thousand, forty-four".