51864382793 has 4 divisors (see below), whose sum is σ = 52057187460. Its totient is φ = 51671578128.

The previous prime is 51864382771. The next prime is 51864382831. The reversal of 51864382793 is 39728346815.

51864382793 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 can be written as a sum of positive squares in 2 ways, for example, as 10147137289 + 41717245504 = 100733^2 + 204248^2 .

It is a cyclic number.

It is not a de Polignac number, because 51864382793 - 2¹⁴ = 51864366409 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (51864382733) 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, 96401930 + ... + 96402467.

It is an arithmetic number, because the mean of its divisors is an integer number (13014296865).

Almost surely, 2^51864382793 is an apocalyptic number.

It is an amenable number.

51864382793 is a deficient number, since it is larger than the sum of its proper divisors (192804667).

51864382793 is a wasteful number, since it uses less digits than its factorization.

51864382793 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 192804666.

The product of its digits is 8709120, while the sum is 56.

The spelling of 51864382793 in words is "fifty-one billion, eight hundred sixty-four million, three hundred eighty-two thousand, seven hundred ninety-three".