51889441630 has 16 divisors (see below), whose sum is σ = 100585687104. Its totient is φ = 19159178400.

The previous prime is 51889441621. The next prime is 51889441651. The reversal of 51889441630 is 3614498815.

It is a happy number.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 199574646 + ... + 199574905.

It is an arithmetic number, because the mean of its divisors is an integer number (6286605444).

Almost surely, 2^51889441630 is an apocalyptic number.

51889441630 is a deficient number, since it is larger than the sum of its proper divisors (48696245474).

51889441630 is a wasteful number, since it uses less digits than its factorization.

51889441630 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 399149571.

The product of its (nonzero) digits is 829440, while the sum is 49.

The spelling of 51889441630 in words is "fifty-one billion, eight hundred eighty-nine million, four hundred forty-one thousand, six hundred thirty".