51893463539 has 2 divisors, whose sum is σ = 51893463540. Its totient is φ = 51893463538.

The previous prime is 51893463529. The next prime is 51893463619. The reversal of 51893463539 is 93536439815.

It is a happy number.

It is a weak prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-51893463539 is a prime.

It is not a weakly prime, because it can be changed into another prime (51893463529) 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 as a sum of consecutive naturals, namely, 25946731769 + 25946731770.

It is an arithmetic number, because the mean of its divisors is an integer number (25946731770).

Almost surely, 2^51893463539 is an apocalyptic number.

51893463539 is a deficient number, since it is larger than the sum of its proper divisors (1).

51893463539 is an equidigital number, since it uses as much as digits as its factorization.

51893463539 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 10497600, while the sum is 56.

The spelling of 51893463539 in words is "fifty-one billion, eight hundred ninety-three million, four hundred sixty-three thousand, five hundred thirty-nine".