685126153824 has 96 divisors (see below), whose sum is σ = 2103178049280. Its totient is φ = 191197988352.

The previous prime is 685126153799. The next prime is 685126153841. The reversal of 685126153824 is 428351621586.

685126153824 is digitally balanced in base 2 and base 4, because in such bases it contains all the possibile digits an equal number of times.

It is a tau number, because it is divible by the number of its divisors (96).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 11826139 + ... + 11883930.

It is an arithmetic number, because the mean of its divisors is an integer number (21908104680).

Almost surely, 2^685126153824 is an apocalyptic number.

It is an amenable number.

685126153824 is an abundant number, since it is smaller than the sum of its proper divisors (1418051895456).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

685126153824 is a wasteful number, since it uses less digits than its factorization.

685126153824 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 23710132 (or 23710124 counting only the distinct ones).

The product of its digits is 2764800, while the sum is 51.

The spelling of 685126153824 in words is "six hundred eighty-five billion, one hundred twenty-six million, one hundred fifty-three thousand, eight hundred twenty-four".