51544002789 has 12 divisors (see below), whose sum is σ = 74995898796. Its totient is φ = 34111845312.

The previous prime is 51544002751. The next prime is 51544002847. The reversal of 51544002789 is 98720044515.

51544002789 is a `hidden beast` number, since 5 + 1 + 544 + 0 + 0 + 27 + 89 = 666.

It can be written as a sum of positive squares in 2 ways, for example, as 43830772164 + 7713230625 = 209358^2 + 87825^2 .

It is not a de Polignac number, because 51544002789 - 2¹³ = 51543994597 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (51544002739) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 20900634 + ... + 20903099.

It is an arithmetic number, because the mean of its divisors is an integer number (6249658233).

Almost surely, 2^51544002789 is an apocalyptic number.

It is an amenable number.

51544002789 is a deficient number, since it is larger than the sum of its proper divisors (23451896007).

51544002789 is a wasteful number, since it uses less digits than its factorization.

51544002789 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 41803876 (or 41803873 counting only the distinct ones).

The product of its (nonzero) digits is 403200, while the sum is 45.

The spelling of 51544002789 in words is "fifty-one billion, five hundred forty-four million, two thousand, seven hundred eighty-nine".