51004043321 has 32 divisors (see below), whose sum is σ = 64099123200. Its totient is φ = 39426166080.

The previous prime is 51004043291. The next prime is 51004043329. The reversal of 51004043321 is 12334040015.

It is not a de Polignac number, because 51004043321 - 2²⁶ = 50936934457 is a prime.

It is not an unprimeable number, because it can be changed into a prime (51004043329) 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 31 ways as a sum of consecutive naturals, for example, 4945256 + ... + 4955558.

It is an arithmetic number, because the mean of its divisors is an integer number (2003097600).

Almost surely, 2^51004043321 is an apocalyptic number.

It is an amenable number.

51004043321 is a deficient number, since it is larger than the sum of its proper divisors (13095079879).

51004043321 is a wasteful number, since it uses less digits than its factorization.

51004043321 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 10829.

The product of its (nonzero) digits is 1440, while the sum is 23.

Adding to 51004043321 its reverse (12334040015), we get a palindrome (63338083336).

The spelling of 51004043321 in words is "fifty-one billion, four million, forty-three thousand, three hundred twenty-one".