51333720744 has 64 divisors (see below), whose sum is σ = 143035156800. Its totient is φ = 15257078784.

The previous prime is 51333720703. The next prime is 51333720749. The reversal of 51333720744 is 44702733315.

It is not an unprimeable number, because it can be changed into a prime (51333720749) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 3303247 + ... + 3318750.

It is an arithmetic number, because the mean of its divisors is an integer number (2234924325).

Almost surely, 2^51333720744 is an apocalyptic number.

It is an amenable number.

51333720744 is an abundant number, since it is smaller than the sum of its proper divisors (91701436056).

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

51333720744 is a wasteful number, since it uses less digits than its factorization.

51333720744 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 6622042 (or 6622038 counting only the distinct ones).

The product of its (nonzero) digits is 211680, while the sum is 39.

The spelling of 51333720744 in words is "fifty-one billion, three hundred thirty-three million, seven hundred twenty thousand, seven hundred forty-four".