51756260516 has 12 divisors (see below), whose sum is σ = 90578353740. Its totient is φ = 25876730880.

The previous prime is 51756260477. The next prime is 51756260519. The reversal of 51756260516 is 61506265715.

It can be written as a sum of positive squares in 2 ways, for example, as 46787420416 + 4968840100 = 216304^2 + 70490^2 .

It is not an unprimeable number, because it can be changed into a prime (51756260519) 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, 264305 + ... + 416376.

It is an arithmetic number, because the mean of its divisors is an integer number (7548196145).

Almost surely, 2^51756260516 is an apocalyptic number.

It is an amenable number.

51756260516 is a deficient number, since it is larger than the sum of its proper divisors (38822093224).

51756260516 is a wasteful number, since it uses less digits than its factorization.

51756260516 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 699694 (or 699692 counting only the distinct ones).

The product of its (nonzero) digits is 378000, while the sum is 44.

The spelling of 51756260516 in words is "fifty-one billion, seven hundred fifty-six million, two hundred sixty thousand, five hundred sixteen".