51843700734816 has 192 divisors, whose sum is σ = 144066905773056. Its totient is φ = 16290253056000.

The previous prime is 51843700734797. The next prime is 51843700734841. The reversal of 51843700734816 is 61843700734815.

It is a super-2 number, since 2×51843700734816² (a number of 28 digits) contains 22 as substring.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 381975766 + ... + 382111466.

It is an arithmetic number, because the mean of its divisors is an integer number (750348467568).

Almost surely, 2^{51843700734816} 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 51843700734816, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (72033452886528).

51843700734816 is an abundant number, since it is smaller than the sum of its proper divisors (92223205038240).

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

51843700734816 is a wasteful number, since it uses less digits than its factorization.

51843700734816 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 138245 (or 138237 counting only the distinct ones).

The product of its (nonzero) digits is 13547520, while the sum is 57.

Subtracting 51843700734816 from its reverse (61843700734815), we obtain a palindrome (9999999999999).

The spelling of 51843700734816 in words is "fifty-one trillion, eight hundred forty-three billion, seven hundred million, seven hundred thirty-four thousand, eight hundred sixteen".