51819386124 has 48 divisors (see below), whose sum is σ = 137638851840. Its totient is φ = 15020111040.

The previous prime is 51819386119. The next prime is 51819386149. The reversal of 51819386124 is 42168391815.

It is a happy number.

It is a Smith number, since the sum of its digits (48) coincides with the sum of the digits of its prime factors.

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 15 ways as a sum of consecutive naturals, for example, 8531119 + ... + 8537190.

It is an arithmetic number, because the mean of its divisors is an integer number (2867476080).

Almost surely, 2^51819386124 is an apocalyptic number.

It is an amenable number.

51819386124 is an abundant number, since it is smaller than the sum of its proper divisors (85819465716).

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

51819386124 is a wasteful number, since it uses less digits than its factorization.

51819386124 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 17068350 (or 17068348 counting only the distinct ones).

The product of its digits is 414720, while the sum is 48.

The spelling of 51819386124 in words is "fifty-one billion, eight hundred nineteen million, three hundred eighty-six thousand, one hundred twenty-four".