51040230321 has 16 divisors (see below), whose sum is σ = 68187816000. Its totient is φ = 33959784768.

The previous prime is 51040230247. The next prime is 51040230323. The reversal of 51040230321 is 12303204015.

It is not a de Polignac number, because 51040230321 - 2¹⁰ = 51040229297 is a prime.

It is a super-2 number, since 2×51040230321² (a number of 22 digits) contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (51040230323) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 5172090 + ... + 5181948.

It is an arithmetic number, because the mean of its divisors is an integer number (4261738500).

Almost surely, 2^51040230321 is an apocalyptic number.

It is an amenable number.

51040230321 is a deficient number, since it is larger than the sum of its proper divisors (17147585679).

51040230321 is a wasteful number, since it uses less digits than its factorization.

51040230321 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 13088.

The product of its (nonzero) digits is 720, while the sum is 21.

Adding to 51040230321 its reverse (12303204015), we get a palindrome (63343434336).

The spelling of 51040230321 in words is "fifty-one billion, forty million, two hundred thirty thousand, three hundred twenty-one".