51243135144 has 16 divisors (see below), whose sum is σ = 128107837920. Its totient is φ = 17081045040.

The previous prime is 51243135133. The next prime is 51243135149. The reversal of 51243135144 is 44153134215.

It is not an unprimeable number, because it can be changed into a prime (51243135149) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1067565292 + ... + 1067565339.

It is an arithmetic number, because the mean of its divisors is an integer number (8006739870).

Almost surely, 2^51243135144 is an apocalyptic number.

It is an amenable number.

51243135144 is an abundant number, since it is smaller than the sum of its proper divisors (76864702776).

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

51243135144 is a wasteful number, since it uses less digits than its factorization.

51243135144 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2135130640 (or 2135130636 counting only the distinct ones).

The product of its digits is 28800, while the sum is 33.

Adding to 51243135144 its reverse (44153134215), we get a palindrome (95396269359).

The spelling of 51243135144 in words is "fifty-one billion, two hundred forty-three million, one hundred thirty-five thousand, one hundred forty-four".