51352516646047 has 4 divisors (see below), whose sum is σ = 51391927634800. Its totient is φ = 51313105657296.

The previous prime is 51352516646021. The next prime is 51352516646099. The reversal of 51352516646047 is 74064661525315.

51352516646047 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

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

It is a cyclic number.

It is not a de Polignac number, because 51352516646047 - 2³⁵ = 51318156907679 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (51352516641047) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 19705492422 + ... + 19705495027.

It is an arithmetic number, because the mean of its divisors is an integer number (12847981908700).

Almost surely, 2^{51352516646047} is an apocalyptic number.

51352516646047 is a deficient number, since it is larger than the sum of its proper divisors (39410988753).

51352516646047 is a wasteful number, since it uses less digits than its factorization.

51352516646047 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 39410988752.

The product of its (nonzero) digits is 18144000, while the sum is 55.

The spelling of 51352516646047 in words is "fifty-one trillion, three hundred fifty-two billion, five hundred sixteen million, six hundred forty-six thousand, forty-seven".