51505116112 has 20 divisors (see below), whose sum is σ = 99794746656. Its totient is φ = 25751633120.

The previous prime is 51505116097. The next prime is 51505116133. The reversal of 51505116112 is 21161150515.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 713187 + ... + 782077.

Almost surely, 2^51505116112 is an apocalyptic number.

It is an amenable number.

51505116112 is a deficient number, since it is larger than the sum of its proper divisors (48289630544).

51505116112 is a wasteful number, since it uses less digits than its factorization.

51505116112 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 115626 (or 115620 counting only the distinct ones).

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

Adding to 51505116112 its reverse (21161150515), we get a palindrome (72666266627).

The spelling of 51505116112 in words is "fifty-one billion, five hundred five million, one hundred sixteen thousand, one hundred twelve".