51235503312 has 320 divisors, whose sum is σ = 162602878464. Its totient is φ = 13569884160.

The previous prime is 51235503287. The next prime is 51235503331. The reversal of 51235503312 is 21330553215.

It is a self number, because there is not a number n which added to its sum of digits gives 51235503312.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 63 ways as a sum of consecutive naturals, for example, 182332612 + ... + 182332892.

Almost surely, 2^51235503312 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 51235503312, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (81301439232).

51235503312 is an abundant number, since it is smaller than the sum of its proper divisors (111367375152).

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

51235503312 is a wasteful number, since it uses less digits than its factorization.

51235503312 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 686 (or 680 counting only the distinct ones).

The product of its (nonzero) digits is 13500, while the sum is 30.

The spelling of 51235503312 in words is "fifty-one billion, two hundred thirty-five million, five hundred three thousand, three hundred twelve".