51820051838712 has 48 divisors (see below), whose sum is σ = 131783111072040. Its totient is φ = 16980581931072.

The previous prime is 51820051838651. The next prime is 51820051838759. The reversal of 51820051838712 is 21783815002815.

51820051838712 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a partition number, being equal to the number of ways a set of 231 identical objects can be partitioned into subset.

It is a congruent number.

It is an unprimeable number.

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 11 ways as a sum of consecutive naturals, for example, 310052743 + ... + 310219830.

Almost surely, 2^{51820051838712} is an apocalyptic number.

It is an amenable number.

51820051838712 is an abundant number, since it is smaller than the sum of its proper divisors (79963059233328).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

51820051838712 is a wasteful number, since it uses less digits than its factorization.

51820051838712 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 620272700 (or 620272637 counting only the distinct ones).

The product of its (nonzero) digits is 1075200, while the sum is 51.

The spelling of 51820051838712 in words is "fifty-one trillion, eight hundred twenty billion, fifty-one million, eight hundred thirty-eight thousand, seven hundred twelve".