51550111216 has 10 divisors (see below), whose sum is σ = 99878340512. Its totient is φ = 25775055600.

The previous prime is 51550111157. The next prime is 51550111253. The reversal of 51550111216 is 61211105515.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1610940960 + ... + 1610940991.

Almost surely, 2^51550111216 is an apocalyptic number.

It is an amenable number.

51550111216 is a deficient number, since it is larger than the sum of its proper divisors (48328229296).

51550111216 is a wasteful number, since it uses less digits than its factorization.

51550111216 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3221881959 (or 3221881953 counting only the distinct ones).

The product of its (nonzero) digits is 1500, while the sum is 28.

The spelling of 51550111216 in words is "fifty-one billion, five hundred fifty million, one hundred eleven thousand, two hundred sixteen".