51372320361305 has 8 divisors (see below), whose sum is σ = 61647108625800. Its totient is φ = 41097640160896.

The previous prime is 51372320361251. The next prime is 51372320361331. The reversal of 51372320361305 is 50316302327315.

It can be written as a sum of positive squares in 4 ways, for example, as 1090209545161 + 50282110816144 = 1044131^2 + 7090988^2 .

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 51372320361305 - 2¹⁰ = 51372320360281 is a prime.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 25966460 + ... + 27874749.

It is an arithmetic number, because the mean of its divisors is an integer number (7705888578225).

Almost surely, 2^{51372320361305} is an apocalyptic number.

It is an amenable number.

51372320361305 is a deficient number, since it is larger than the sum of its proper divisors (10274788264495).

51372320361305 is a wasteful number, since it uses less digits than its factorization.

51372320361305 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 54032043.

The product of its (nonzero) digits is 340200, while the sum is 41.

The spelling of 51372320361305 in words is "fifty-one trillion, three hundred seventy-two billion, three hundred twenty million, three hundred sixty-one thousand, three hundred five".