51430364399 has 2 divisors, whose sum is σ = 51430364400. Its totient is φ = 51430364398.

The previous prime is 51430364327. The next prime is 51430364411. The reversal of 51430364399 is 99346303415.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 51430364399 - 2⁸ = 51430364143 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (51430363399) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 25715182199 + 25715182200.

It is an arithmetic number, because the mean of its divisors is an integer number (25715182200).

Almost surely, 2^51430364399 is an apocalyptic number.

51430364399 is a deficient number, since it is larger than the sum of its proper divisors (1).

51430364399 is an equidigital number, since it uses as much as digits as its factorization.

51430364399 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 1049760, while the sum is 47.

The spelling of 51430364399 in words is "fifty-one billion, four hundred thirty million, three hundred sixty-four thousand, three hundred ninety-nine".