51444451484 has 12 divisors (see below), whose sum is σ = 91726428024. Its totient is φ = 25236900624.

The previous prime is 51444451447. The next prime is 51444451493. The reversal of 51444451484 is 48415444415.

It is a hoax number, since the sum of its digits (44) coincides with the sum of the digits of its distinct prime factors.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 121331042 + ... + 121331465.

It is an arithmetic number, because the mean of its divisors is an integer number (7643869002).

Almost surely, 2^51444451484 is an apocalyptic number.

It is an amenable number.

51444451484 is a deficient number, since it is larger than the sum of its proper divisors (40281976540).

51444451484 is a wasteful number, since it uses less digits than its factorization.

51444451484 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 242662564 (or 242662562 counting only the distinct ones).

The product of its digits is 819200, while the sum is 44.

Adding to 51444451484 its reverse (48415444415), we get a palindrome (99859895899).

The spelling of 51444451484 in words is "fifty-one billion, four hundred forty-four million, four hundred fifty-one thousand, four hundred eighty-four".