51231035544000 has 448 divisors, whose sum is σ = 190098352604160. Its totient is φ = 12062422732800.

The previous prime is 51231035543981. The next prime is 51231035544041. The reversal of 51231035544000 is 44553013215.

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, 3606391 + ... + 10745609.

It is an arithmetic number, because the mean of its divisors is an integer number (424326679920).

Almost surely, 2^{51231035544000} is an apocalyptic number.

51231035544000 is a gapful number since it is divisible by the number (50) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 51231035544000, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (95049176302080).

51231035544000 is an abundant number, since it is smaller than the sum of its proper divisors (138867317060160).

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

51231035544000 is a wasteful number, since it uses less digits than its factorization.

51231035544000 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 7139285 (or 7139265 counting only the distinct ones).

The product of its (nonzero) digits is 36000, while the sum is 33.

Adding to 51231035544000 its reverse (44553013215), we get a palindrome (51275588557215).

The spelling of 51231035544000 in words is "fifty-one trillion, two hundred thirty-one billion, thirty-five million, five hundred forty-four thousand".