51333043393 has 2 divisors, whose sum is σ = 51333043394. Its totient is φ = 51333043392.

The previous prime is 51333043319. The next prime is 51333043423. The reversal of 51333043393 is 39334033315.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 28853438769 + 22479604624 = 169863^2 + 149932^2 .

It is a cyclic number.

It is not a de Polignac number, because 51333043393 - 2²⁹ = 50796172481 is a prime.

It is not a weakly prime, because it can be changed into another prime (51333043303) 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 as a sum of consecutive naturals, namely, 25666521696 + 25666521697.

It is an arithmetic number, because the mean of its divisors is an integer number (25666521697).

Almost surely, 2^51333043393 is an apocalyptic number.

It is an amenable number.

51333043393 is a deficient number, since it is larger than the sum of its proper divisors (1).

51333043393 is an equidigital number, since it uses as much as digits as its factorization.

51333043393 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 131220, while the sum is 37.

The spelling of 51333043393 in words is "fifty-one billion, three hundred thirty-three million, forty-three thousand, three hundred ninety-three".