685253457105 has 16 divisors (see below), whose sum is σ = 1253034893184. Its totient is φ = 313258723200.

The previous prime is 685253457103. The next prime is 685253457121. The reversal of 685253457105 is 501754352586.

It is not a de Polignac number, because 685253457105 - 2¹ = 685253457103 is a prime.

It is not an unprimeable number, because it can be changed into a prime (685253457101) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 3263111596 + ... + 3263111805.

It is an arithmetic number, because the mean of its divisors is an integer number (78314680824).

Almost surely, 2^685253457105 is an apocalyptic number.

It is an amenable number.

685253457105 is a deficient number, since it is larger than the sum of its proper divisors (567781436079).

685253457105 is a wasteful number, since it uses less digits than its factorization.

685253457105 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 6526223416.

The product of its (nonzero) digits is 5040000, while the sum is 51.

The spelling of 685253457105 in words is "six hundred eighty-five billion, two hundred fifty-three million, four hundred fifty-seven thousand, one hundred five".