51316075272 has 192 divisors, whose sum is σ = 163952409600. Its totient is φ = 13002969600.

The previous prime is 51316075259. The next prime is 51316075297. The reversal of 51316075272 is 27257061315.

It is a happy number.

51316075272 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a self number, because there is not a number n which added to its sum of digits gives 51316075272.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 3098229 + ... + 3114747.

It is an arithmetic number, because the mean of its divisors is an integer number (853918800).

Almost surely, 2^51316075272 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 51316075272, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (81976204800).

51316075272 is an abundant number, since it is smaller than the sum of its proper divisors (112636334328).

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

51316075272 is a wasteful number, since it uses less digits than its factorization.

51316075272 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 16628 (or 16583 counting only the distinct ones).

The product of its (nonzero) digits is 88200, while the sum is 39.

The spelling of 51316075272 in words is "fifty-one billion, three hundred sixteen million, seventy-five thousand, two hundred seventy-two".