853029585122 has 54 divisors (see below), whose sum is σ = 1523284815969. Its totient is φ = 357836141520.

The previous prime is 853029585077. The next prime is 853029585131. The reversal of 853029585122 is 221585920358.

It can be written as a sum of positive squares in 2 ways, for example, as 729365532841 + 123664052281 = 854029^2 + 351659^2 .

It is an ABA number since it can be written as A⋅B^A, here for A=2, B=653081.

It is a super-2 number, since 2×853029585122² (a number of 25 digits) contains 22 as substring.

It is a Duffinian number.

It is an unprimeable number.

It is a polite number, since it can be written in 26 ways as a sum of consecutive naturals, for example, 186778883 + ... + 186783449.

Almost surely, 2^853029585122 is an apocalyptic number.

853029585122 is a deficient number, since it is larger than the sum of its proper divisors (670255230847).

853029585122 is an equidigital number, since it uses as much as digits as its factorization.

853029585122 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 9184 (or 4593 counting only the distinct ones).

The product of its (nonzero) digits is 1728000, while the sum is 50.

Multiplying 853029585122 by its sum of digits (50), we get a square (42651479256100 = 6530810²).

The spelling of 853029585122 in words is "eight hundred fifty-three billion, twenty-nine million, five hundred eighty-five thousand, one hundred twenty-two".