51342140424 has 32 divisors (see below), whose sum is σ = 129626202240. Its totient is φ = 16944600000.

The previous prime is 51342140417. The next prime is 51342140459. The reversal of 51342140424 is 42404124315.

It is a junction number, because it is equal to n+sod(n) for n = 51342140391 and 51342140400.

It is an unprimeable number.

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 7 ways as a sum of consecutive naturals, for example, 10587952 + ... + 10592799.

It is an arithmetic number, because the mean of its divisors is an integer number (4050818820).

Almost surely, 2^51342140424 is an apocalyptic number.

It is an amenable number.

51342140424 is an abundant number, since it is smaller than the sum of its proper divisors (78284061816).

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

51342140424 is a wasteful number, since it uses less digits than its factorization.

51342140424 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 21180861 (or 21180857 counting only the distinct ones).

The product of its (nonzero) digits is 15360, while the sum is 30.

Adding to 51342140424 its reverse (42404124315), we get a palindrome (93746264739).

The spelling of 51342140424 in words is "fifty-one billion, three hundred forty-two million, one hundred forty thousand, four hundred twenty-four".