51662312232 has 32 divisors (see below), whose sum is σ = 129292221600. Its totient is φ = 17202578624.

The previous prime is 51662312213. The next prime is 51662312323. The reversal of 51662312232 is 23221326615.

It is a happy number.

It is a junction number, because it is equal to n+sod(n) for n = 51662312193 and 51662312202.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 1113807 + ... + 1159262.

It is an arithmetic number, because the mean of its divisors is an integer number (4040381925).

Almost surely, 2^51662312232 is an apocalyptic number.

It is an amenable number.

51662312232 is an abundant number, since it is smaller than the sum of its proper divisors (77629909368).

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

51662312232 is a wasteful number, since it uses less digits than its factorization.

51662312232 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2274025 (or 2274021 counting only the distinct ones).

The product of its digits is 25920, while the sum is 33.

Adding to 51662312232 its reverse (23221326615), we get a palindrome (74883638847).

The spelling of 51662312232 in words is "fifty-one billion, six hundred sixty-two million, three hundred twelve thousand, two hundred thirty-two".