51431344424 has 16 divisors (see below), whose sum is σ = 96440159520. Its totient is φ = 25713968560.

The previous prime is 51431344421. The next prime is 51431344493. The reversal of 51431344424 is 42444313415.

It is a happy number.

It is not an unprimeable number, because it can be changed into a prime (51431344421) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 79754 + ... + 330489.

It is an arithmetic number, because the mean of its divisors is an integer number (6027509970).

Almost surely, 2^51431344424 is an apocalyptic number.

It is an amenable number.

51431344424 is a deficient number, since it is larger than the sum of its proper divisors (45008815096).

51431344424 is a wasteful number, since it uses less digits than its factorization.

51431344424 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 425920 (or 425916 counting only the distinct ones).

The product of its digits is 92160, while the sum is 35.

Adding to 51431344424 its reverse (42444313415), we get a palindrome (93875657839).

The spelling of 51431344424 in words is "fifty-one billion, four hundred thirty-one million, three hundred forty-four thousand, four hundred twenty-four".