685413415399 has 2 divisors, whose sum is σ = 685413415400. Its totient is φ = 685413415398.

The previous prime is 685413415381. The next prime is 685413415481. The reversal of 685413415399 is 993514314586.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 685413415399 - 2³⁵ = 651053677031 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (685413418399) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 342706707699 + 342706707700.

It is an arithmetic number, because the mean of its divisors is an integer number (342706707700).

Almost surely, 2^685413415399 is an apocalyptic number.

685413415399 is a deficient number, since it is larger than the sum of its proper divisors (1).

685413415399 is an equidigital number, since it uses as much as digits as its factorization.

685413415399 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 13996800, while the sum is 58.

The spelling of 685413415399 in words is "six hundred eighty-five billion, four hundred thirteen million, four hundred fifteen thousand, three hundred ninety-nine".