51274434744 has 384 divisors, whose sum is σ = 159889766400. Its totient is φ = 14732928000.

The previous prime is 51274434733. The next prime is 51274434779. The reversal of 51274434744 is 44743447215.

51274434744 is a `hidden beast` number, since 5 + 127 + 443 + 47 + 44 = 666.

It is a self number, because there is not a number n which added to its sum of digits gives 51274434744.

It is a congruent number.

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 95 ways as a sum of consecutive naturals, for example, 104428339 + ... + 104428829.

It is an arithmetic number, because the mean of its divisors is an integer number (416379600).

Almost surely, 2^51274434744 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 51274434744, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (79944883200).

51274434744 is an abundant number, since it is smaller than the sum of its proper divisors (108615331656).

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

51274434744 is a wasteful number, since it uses less digits than its factorization.

51274434744 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 667 (or 660 counting only the distinct ones).

The product of its digits is 1505280, while the sum is 45.

The spelling of 51274434744 in words is "fifty-one billion, two hundred seventy-four million, four hundred thirty-four thousand, seven hundred forty-four".