51756313082345 has 4 divisors (see below), whose sum is σ = 62107575698820. Its totient is φ = 41405050465872.

The previous prime is 51756313082273. The next prime is 51756313082359. The reversal of 51756313082345 is 54328031365715.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 25006770458329 + 26749542624016 = 5000677^2 + 5171996^2 .

It is a cyclic number.

It is not a de Polignac number, because 51756313082345 - 2¹⁶ = 51756313016809 is a prime.

It is a Curzon number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 5175631308230 + ... + 5175631308239.

It is an arithmetic number, because the mean of its divisors is an integer number (15526893924705).

Almost surely, 2^{51756313082345} is an apocalyptic number.

It is an amenable number.

51756313082345 is a deficient number, since it is larger than the sum of its proper divisors (10351262616475).

51756313082345 is a wasteful number, since it uses less digits than its factorization.

51756313082345 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 10351262616474.

The product of its (nonzero) digits is 9072000, while the sum is 53.

The spelling of 51756313082345 in words is "fifty-one trillion, seven hundred fifty-six billion, three hundred thirteen million, eighty-two thousand, three hundred forty-five".