65312543687 has 2 divisors, whose sum is σ = 65312543688. Its totient is φ = 65312543686.

The previous prime is 65312543641. The next prime is 65312543701. The reversal of 65312543687 is 78634521356.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 65312543687 - 2⁸ = 65312543431 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (65312545687) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 32656271843 + 32656271844.

It is an arithmetic number, because the mean of its divisors is an integer number (32656271844).

Almost surely, 2^65312543687 is an apocalyptic number.

65312543687 is a deficient number, since it is larger than the sum of its proper divisors (1).

65312543687 is an equidigital number, since it uses as much as digits as its factorization.

65312543687 is an evil number, because the sum of its binary digits is even.

The product of its digits is 3628800, while the sum is 50.

The spelling of 65312543687 in words is "sixty-five billion, three hundred twelve million, five hundred forty-three thousand, six hundred eighty-seven".