51530633232 has 80 divisors (see below), whose sum is σ = 143671304448. Its totient is φ = 15821245440.

The previous prime is 51530633213. The next prime is 51530633269. The reversal of 51530633232 is 23233603515.

It is a super-2 number, since 2×51530633232² (a number of 22 digits) contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 51530633193 and 51530633202.

It is an unprimeable number.

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 15 ways as a sum of consecutive naturals, for example, 199732 + ... + 378092.

Almost surely, 2^51530633232 is an apocalyptic number.

51530633232 is a gapful number since it is divisible by the number (52) 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 51530633232, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (71835652224).

51530633232 is an abundant number, since it is smaller than the sum of its proper divisors (92140671216).

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

51530633232 is a wasteful number, since it uses less digits than its factorization.

51530633232 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 178848 (or 178842 counting only the distinct ones).

The product of its (nonzero) digits is 48600, while the sum is 33.

The spelling of 51530633232 in words is "fifty-one billion, five hundred thirty million, six hundred thirty-three thousand, two hundred thirty-two".