51388424352 has 120 divisors (see below), whose sum is σ = 151200314496. Its totient is φ = 17121725568.

The previous prime is 51388424303. The next prime is 51388424359. The reversal of 51388424352 is 25342488315.

51388424352 is a `hidden beast` number, since 5 + 138 + 84 + 2 + 435 + 2 = 666.

It is a junction number, because it is equal to n+sod(n) for n = 51388424298 and 51388424307.

It is not an unprimeable number, because it can be changed into a prime (51388424359) 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 19 ways as a sum of consecutive naturals, for example, 10228113 + ... + 10233135.

Almost surely, 2^51388424352 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 51388424352, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (75600157248).

51388424352 is an abundant number, since it is smaller than the sum of its proper divisors (99811890144).

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

51388424352 is a wasteful number, since it uses less digits than its factorization.

51388424352 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 8992 (or 8975 counting only the distinct ones).

The product of its digits is 921600, while the sum is 45.

The spelling of 51388424352 in words is "fifty-one billion, three hundred eighty-eight million, four hundred twenty-four thousand, three hundred fifty-two".