51749534472 has 32 divisors (see below), whose sum is σ = 129402748800. Its totient is φ = 17245989824.

The previous prime is 51749534453. The next prime is 51749534477. The reversal of 51749534472 is 27443594715.

It is a happy number.

It is not an unprimeable number, because it can be changed into a prime (51749534477) by changing a digit.

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 7 ways as a sum of consecutive naturals, for example, 130272 + ... + 347087.

It is an arithmetic number, because the mean of its divisors is an integer number (4043835900).

Almost surely, 2^51749534472 is an apocalyptic number.

It is an amenable number.

51749534472 is an abundant number, since it is smaller than the sum of its proper divisors (77653214328).

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

51749534472 is a wasteful number, since it uses less digits than its factorization.

51749534472 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 481885 (or 481881 counting only the distinct ones).

The product of its digits is 4233600, while the sum is 51.

The spelling of 51749534472 in words is "fifty-one billion, seven hundred forty-nine million, five hundred thirty-four thousand, four hundred seventy-two".