985905450556 has 48 divisors (see below), whose sum is σ = 2052886780224. Its totient is φ = 409646324736.

The previous prime is 985905450529. The next prime is 985905450577. The reversal of 985905450556 is 655054509589.

985905450556 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a junction number, because it is equal to n+sod(n) for n = 985905450494 and 985905450503.

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, 24224835 + ... + 24265498.

It is an arithmetic number, because the mean of its divisors is an integer number (42768474588).

Almost surely, 2^985905450556 is an apocalyptic number.

It is an amenable number.

985905450556 is an abundant number, since it is smaller than the sum of its proper divisors (1066981329668).

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

985905450556 is a wasteful number, since it uses less digits than its factorization.

985905450556 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 48490390 (or 48490388 counting only the distinct ones).

The product of its (nonzero) digits is 48600000, while the sum is 61.

The spelling of 985905450556 in words is "nine hundred eighty-five billion, nine hundred five million, four hundred fifty thousand, five hundred fifty-six".