51021304205143 has 2 divisors, whose sum is σ = 51021304205144. Its totient is φ = 51021304205142.

The previous prime is 51021304205107. The next prime is 51021304205153. The reversal of 51021304205143 is 34150240312015.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 51021304205143 - 2⁹ = 51021304204631 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (51021304205153) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 25510652102571 + 25510652102572.

It is an arithmetic number, because the mean of its divisors is an integer number (25510652102572).

Almost surely, 2^{51021304205143} is an apocalyptic number.

51021304205143 is a deficient number, since it is larger than the sum of its proper divisors (1).

51021304205143 is an equidigital number, since it uses as much as digits as its factorization.

51021304205143 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 14400, while the sum is 31.

Adding to 51021304205143 its reverse (34150240312015), we get a palindrome (85171544517158).

The spelling of 51021304205143 in words is "fifty-one trillion, twenty-one billion, three hundred four million, two hundred five thousand, one hundred forty-three".