51305663675333 has 4 divisors (see below), whose sum is σ = 52008480986028. Its totient is φ = 50602846364640.

The previous prime is 51305663675309. The next prime is 51305663675377. The reversal of 51305663675333 is 33357636650315.

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 39546401919649 + 11759261755684 = 6288593^2 + 3429178^2 .

It is a cyclic number.

It is not a de Polignac number, because 51305663675333 - 2⁶ = 51305663675269 is a prime.

It is a super-2 number, since 2×51305663675333² (a number of 28 digits) contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (51305663635333) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 351408655238 + ... + 351408655383.

It is an arithmetic number, because the mean of its divisors is an integer number (13002120246507).

Almost surely, 2^{51305663675333} is an apocalyptic number.

It is an amenable number.

51305663675333 is a deficient number, since it is larger than the sum of its proper divisors (702817310695).

51305663675333 is an equidigital number, since it uses as much as digits as its factorization.

51305663675333 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 702817310694.

The product of its (nonzero) digits is 45927000, while the sum is 56.

The spelling of 51305663675333 in words is "fifty-one trillion, three hundred five billion, six hundred sixty-three million, six hundred seventy-five thousand, three hundred thirty-three".