51001322432 has 112 divisors (see below), whose sum is σ = 108233748480. Its totient is φ = 23775897600.

The previous prime is 51001322417. The next prime is 51001322443. The reversal of 51001322432 is 23422310015.

It is a super-2 number, since 2×51001322432² (a number of 22 digits) contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 51001322398 and 51001322407.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 20229332 + ... + 20231852.

Almost surely, 2^51001322432 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 51001322432, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (54116874240).

51001322432 is an abundant number, since it is smaller than the sum of its proper divisors (57232426048).

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

51001322432 is a wasteful number, since it uses less digits than its factorization.

51001322432 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2810 (or 2800 counting only the distinct ones).

The product of its (nonzero) digits is 1440, while the sum is 23.

Adding to 51001322432 its reverse (23422310015), we get a palindrome (74423632447).

The spelling of 51001322432 in words is "fifty-one billion, one million, three hundred twenty-two thousand, four hundred thirty-two".