51252531644424 has 256 divisors, whose sum is σ = 152805413376000. Its totient is φ = 14156964138240.

The previous prime is 51252531644411. The next prime is 51252531644429. The reversal of 51252531644424 is 42444613525215.

It is not an unprimeable number, because it can be changed into a prime (51252531644429) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 63 ways as a sum of consecutive naturals, for example, 12677787 + ... + 16224405.

It is an arithmetic number, because the mean of its divisors is an integer number (596896146000).

Almost surely, 2^{51252531644424} 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 51252531644424, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (76402706688000).

51252531644424 is an abundant number, since it is smaller than the sum of its proper divisors (101552881731576).

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

51252531644424 is a wasteful number, since it uses less digits than its factorization.

51252531644424 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3546768 (or 3546764 counting only the distinct ones).

The product of its digits is 4608000, while the sum is 48.

The spelling of 51252531644424 in words is "fifty-one trillion, two hundred fifty-two billion, five hundred thirty-one million, six hundred forty-four thousand, four hundred twenty-four".