853850385385 has 16 divisors (see below), whose sum is σ = 1029481238016. Its totient is φ = 679841376768.

The previous prime is 853850385383. The next prime is 853850385407. The reversal of 853850385385 is 583583058358.

It is a happy number.

It is a cyclic number.

It is not a de Polignac number, because 853850385385 - 2¹ = 853850385383 is a prime.

It is a super-2 number, since 2×853850385385² (a number of 25 digits) contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (853850385383) 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, 4303897 + ... + 4497913.

It is an arithmetic number, because the mean of its divisors is an integer number (64342577376).

Almost surely, 2^853850385385 is an apocalyptic number.

It is an amenable number.

853850385385 is a deficient number, since it is larger than the sum of its proper divisors (175630852631).

853850385385 is a wasteful number, since it uses less digits than its factorization.

853850385385 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 198192.

The product of its (nonzero) digits is 69120000, while the sum is 61.

The spelling of 853850385385 in words is "eight hundred fifty-three billion, eight hundred fifty million, three hundred eighty-five thousand, three hundred eighty-five".