678306267894539 has 2 divisors, whose sum is σ = 678306267894540. Its totient is φ = 678306267894538.

The previous prime is 678306267894523. The next prime is 678306267894559. The reversal of 678306267894539 is 935498762603876.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 678306267894539 - 2⁴ = 678306267894523 is a prime.

It is a Sophie Germain prime.

It is not a weakly prime, because it can be changed into another prime (678306267894559) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 339153133947269 + 339153133947270.

It is an arithmetic number, because the mean of its divisors is an integer number (339153133947270).

Almost surely, 2^{678306267894539} is an apocalyptic number.

678306267894539 is a deficient number, since it is larger than the sum of its proper divisors (1).

678306267894539 is an equidigital number, since it uses as much as digits as its factorization.

678306267894539 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 19752284160, while the sum is 83.

The spelling of 678306267894539 in words is "six hundred seventy-eight trillion, three hundred six billion, two hundred sixty-seven million, eight hundred ninety-four thousand, five hundred thirty-nine".