685536038843 has 2 divisors, whose sum is σ = 685536038844. Its totient is φ = 685536038842.

The previous prime is 685536038827. The next prime is 685536038903. The reversal of 685536038843 is 348830635586.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 685536038843 - 2⁴ = 685536038827 is a prime.

It is a super-3 number, since 3×685536038843³ (a number of 36 digits) contains 333 as substring.

It is not a weakly prime, because it can be changed into another prime (685536838843) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 342768019421 + 342768019422.

It is an arithmetic number, because the mean of its divisors is an integer number (342768019422).

Almost surely, 2^685536038843 is an apocalyptic number.

685536038843 is a deficient number, since it is larger than the sum of its proper divisors (1).

685536038843 is an equidigital number, since it uses as much as digits as its factorization.

685536038843 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 49766400, while the sum is 59.

The spelling of 685536038843 in words is "six hundred eighty-five billion, five hundred thirty-six million, thirty-eight thousand, eight hundred forty-three".