51421934592 has 704 divisors, whose sum is σ = 183998115840. Its totient is φ = 13878853632.

The previous prime is 51421934579. The next prime is 51421934617. The reversal of 51421934592 is 29543912415.

It is a happy number.

51421934592 is a `hidden beast` number, since 5 + 1 + 4 + 2 + 193 + 459 + 2 = 666.

51421934592 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

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, 307915693 + ... + 307915859.

It is an arithmetic number, because the mean of its divisors is an integer number (261360960).

Almost surely, 2^51421934592 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 51421934592, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (91999057920).

51421934592 is an abundant number, since it is smaller than the sum of its proper divisors (132576181248).

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

51421934592 is a wasteful number, since it uses less digits than its factorization.

51421934592 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 283 (or 259 counting only the distinct ones).

The product of its digits is 388800, while the sum is 45.

The spelling of 51421934592 in words is "fifty-one billion, four hundred twenty-one million, nine hundred thirty-four thousand, five hundred ninety-two".