51200816473 has 4 divisors (see below), whose sum is σ = 52166869668. Its totient is φ = 50234763280.

The previous prime is 51200816351. The next prime is 51200816489. The reversal of 51200816473 is 37461800215.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 44945272009 + 6255544464 = 212003^2 + 79092^2 .

It is a cyclic number.

It is not a de Polignac number, because 51200816473 - 2¹⁷ = 51200685401 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (51200816573) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 483026518 + ... + 483026623.

It is an arithmetic number, because the mean of its divisors is an integer number (13041717417).

Almost surely, 2^51200816473 is an apocalyptic number.

51200816473 is a gapful number since it is divisible by the number (53) formed by its first and last digit.

It is an amenable number.

51200816473 is a deficient number, since it is larger than the sum of its proper divisors (966053195).

51200816473 is an equidigital number, since it uses as much as digits as its factorization.

51200816473 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 966053194.

The product of its (nonzero) digits is 40320, while the sum is 37.

The spelling of 51200816473 in words is "fifty-one billion, two hundred million, eight hundred sixteen thousand, four hundred seventy-three".