685451464154585 has 32 divisors (see below), whose sum is σ = 833319404547840. Its totient is φ = 541222898169600.

The previous prime is 685451464154539. The next prime is 685451464154603. The reversal of 685451464154585 is 585451464154586.

It is a happy number.

685451464154585 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a de Polignac number, because none of the positive numbers 2^k-685451464154585 is a prime.

It is an unprimeable number.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 1440297620 + ... + 1440773450.

It is an arithmetic number, because the mean of its divisors is an integer number (26041231392120).

Almost surely, 2^{685451464154585} is an apocalyptic number.

It is an amenable number.

685451464154585 is a deficient number, since it is larger than the sum of its proper divisors (147867940393255).

685451464154585 is a wasteful number, since it uses less digits than its factorization.

685451464154585 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 488129.

The product of its digits is 1843200000, while the sum is 71.

Subtracting from 685451464154585 its reverse (585451464154586), we obtain a palindrome (99999999999999).

The spelling of 685451464154585 in words is "six hundred eighty-five trillion, four hundred fifty-one billion, four hundred sixty-four million, one hundred fifty-four thousand, five hundred eighty-five".