51514864319 has 2 divisors, whose sum is σ = 51514864320. Its totient is φ = 51514864318.

The previous prime is 51514864301. The next prime is 51514864393. The reversal of 51514864319 is 91346841515.

It is a weak prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-51514864319 is a prime.

It is a super-2 number, since 2×51514864319² (a number of 22 digits) contains 22 as substring.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (51514861319) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 25757432159 + 25757432160.

It is an arithmetic number, because the mean of its divisors is an integer number (25757432160).

Almost surely, 2^51514864319 is an apocalyptic number.

51514864319 is a deficient number, since it is larger than the sum of its proper divisors (1).

51514864319 is an equidigital number, since it uses as much as digits as its factorization.

51514864319 is an evil number, because the sum of its binary digits is even.

The product of its digits is 518400, while the sum is 47.

The spelling of 51514864319 in words is "fifty-one billion, five hundred fourteen million, eight hundred sixty-four thousand, three hundred nineteen".