51328307863 has 24 divisors (see below), whose sum is σ = 60369817200. Its totient is φ = 43509892608.

The previous prime is 51328307843. The next prime is 51328307941. The reversal of 51328307863 is 36870382315.

It is not a de Polignac number, because 51328307863 - 2²¹ = 51326210711 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (51328307803) 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 23 ways as a sum of consecutive naturals, for example, 2912743 + ... + 2930311.

It is an arithmetic number, because the mean of its divisors is an integer number (2515409050).

Almost surely, 2^51328307863 is an apocalyptic number.

51328307863 is a deficient number, since it is larger than the sum of its proper divisors (9041509337).

51328307863 is a wasteful number, since it uses less digits than its factorization.

51328307863 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 18239 (or 18232 counting only the distinct ones).

The product of its (nonzero) digits is 725760, while the sum is 46.

The spelling of 51328307863 in words is "fifty-one billion, three hundred twenty-eight million, three hundred seven thousand, eight hundred sixty-three".