51021144603 has 48 divisors (see below), whose sum is σ = 87082186464. Its totient is φ = 28378183680.

The previous prime is 51021144599. The next prime is 51021144623. The reversal of 51021144603 is 30644112015.

It is a happy number.

51021144603 is a `hidden beast` number, since 5 + 1 + 0 + 2 + 11 + 44 + 603 = 666.

It is not a de Polignac number, because 51021144603 - 2² = 51021144599 is a prime.

It is not an unprimeable number, because it can be changed into a prime (51021144623) by changing a digit.

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 47 ways as a sum of consecutive naturals, for example, 108075 + ... + 337227.

It is an arithmetic number, because the mean of its divisors is an integer number (1814212218).

Almost surely, 2^51021144603 is an apocalyptic number.

51021144603 is a deficient number, since it is larger than the sum of its proper divisors (36061041861).

51021144603 is a wasteful number, since it uses less digits than its factorization.

51021144603 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 229356 (or 229353 counting only the distinct ones).

The product of its (nonzero) digits is 2880, while the sum is 27.

Adding to 51021144603 its reverse (30644112015), we get a palindrome (81665256618).

The spelling of 51021144603 in words is "fifty-one billion, twenty-one million, one hundred forty-four thousand, six hundred three".