51531335124 has 48 divisors (see below), whose sum is σ = 120777269760. Its totient is φ = 17100396000.

The previous prime is 51531335117. The next prime is 51531335171. The reversal of 51531335124 is 42153313515.

It is a congruent 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, 11874147 + ... + 11878485.

It is an arithmetic number, because the mean of its divisors is an integer number (2516193120).

Almost surely, 2^51531335124 is an apocalyptic number.

It is an amenable number.

51531335124 is an abundant number, since it is smaller than the sum of its proper divisors (69245934636).

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

51531335124 is a wasteful number, since it uses less digits than its factorization.

51531335124 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 8540 (or 8538 counting only the distinct ones).

The product of its digits is 27000, while the sum is 33.

Adding to 51531335124 its reverse (42153313515), we get a palindrome (93684648639).

The spelling of 51531335124 in words is "fifty-one billion, five hundred thirty-one million, three hundred thirty-five thousand, one hundred twenty-four".