51845749443 has 12 divisors (see below), whose sum is σ = 74897943120. Its totient is φ = 34559384496.

The previous prime is 51845749441. The next prime is 51845749453. The reversal of 51845749443 is 34494754815.

51845749443 is a `hidden beast` number, since 51 + 84 + 5 + 74 + 9 + 443 = 666.

51845749443 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is not a de Polignac number, because 51845749443 - 2¹ = 51845749441 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 51845749443.

It is not an unprimeable number, because it can be changed into a prime (51845749441) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 296103 + ... + 437456.

It is an arithmetic number, because the mean of its divisors is an integer number (6241495260).

Almost surely, 2^51845749443 is an apocalyptic number.

51845749443 is a deficient number, since it is larger than the sum of its proper divisors (23052193677).

51845749443 is a wasteful number, since it uses less digits than its factorization.

51845749443 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 741418 (or 741415 counting only the distinct ones).

The product of its digits is 9676800, while the sum is 54.

The spelling of 51845749443 in words is "fifty-one billion, eight hundred forty-five million, seven hundred forty-nine thousand, four hundred forty-three".