51313243760 has 40 divisors (see below), whose sum is σ = 125582416080. Its totient is φ = 19445018112.

The previous prime is 51313243733. The next prime is 51313243763. The reversal of 51313243760 is 6734231315.

It is a tau number, because it is divible by the number of its divisors (40).

It is a self number, because there is not a number n which added to its sum of digits gives 51313243760.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (51313243763) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 16877837 + ... + 16880876.

It is an arithmetic number, because the mean of its divisors is an integer number (3139560402).

Almost surely, 2^51313243760 is an apocalyptic number.

It is an amenable number.

51313243760 is an abundant number, since it is smaller than the sum of its proper divisors (74269172320).

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

51313243760 is a wasteful number, since it uses less digits than its factorization.

51313243760 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 33758745 (or 33758739 counting only the distinct ones).

The product of its (nonzero) digits is 45360, while the sum is 35.

The spelling of 51313243760 in words is "fifty-one billion, three hundred thirteen million, two hundred forty-three thousand, seven hundred sixty".