51651728044 has 12 divisors (see below), whose sum is σ = 103303456144. Its totient is φ = 22136454864.

The previous prime is 51651728033. The next prime is 51651728047. The reversal of 51651728044 is 44082715615.

51651728044 is an admirable number.

It is not an unprimeable number, because it can be changed into a prime (51651728047) by changing a digit.

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 3 ways as a sum of consecutive naturals, for example, 922352259 + ... + 922352314.

Almost surely, 2^51651728044 is an apocalyptic number.

It is an amenable number.

51651728044 is a primitive abundant number, since it is smaller than the sum of its proper divisors, none of which is abundant.

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

51651728044 is a wasteful number, since it uses less digits than its factorization.

51651728044 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1844704584 (or 1844704582 counting only the distinct ones).

The product of its (nonzero) digits is 268800, while the sum is 43.

The spelling of 51651728044 in words is "fifty-one billion, six hundred fifty-one million, seven hundred twenty-eight thousand, forty-four".