51274726272 has 768 divisors, whose sum is σ = 193897267200. Its totient is φ = 13101004800.

The previous prime is 51274726271. The next prime is 51274726289. The reversal of 51274726272 is 27262747215.

51274726272 is a `hidden beast` number, since 5 + 12 + 7 + 4 + 7 + 2 + 627 + 2 = 666.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (51274726271) by changing a digit.

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 95 ways as a sum of consecutive naturals, for example, 189205497 + ... + 189205767.

It is an arithmetic number, because the mean of its divisors is an integer number (252470400).

Almost surely, 2^51274726272 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 51274726272, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (96948633600).

51274726272 is an abundant number, since it is smaller than the sum of its proper divisors (142622540928).

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

51274726272 is a wasteful number, since it uses less digits than its factorization.

51274726272 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 397 (or 373 counting only the distinct ones).

The product of its digits is 658560, while the sum is 45.

The spelling of 51274726272 in words is "fifty-one billion, two hundred seventy-four million, seven hundred twenty-six thousand, two hundred seventy-two".