1085031205578 has 48 divisors (see below), whose sum is σ = 2492107994376. Its totient is φ = 340002800640.

The previous prime is 1085031205537. The next prime is 1085031205597. The reversal of 1085031205578 is 8755021305801.

1085031205578 is a `hidden beast` number, since 1 + 0 + 8 + 50 + 3 + 1 + 20 + 5 + 578 = 666.

1085031205578 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It can be written as a sum of positive squares in 4 ways, for example, as 816227323209 + 268803882369 = 903453^2 + 518463^2 .

It is an unprimeable number.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 1817443 + ... + 2339478.

Almost surely, 2^{1085031205578} is an apocalyptic number.

1085031205578 is a gapful number since it is divisible by the number (18) formed by its first and last digit.

1085031205578 is an abundant number, since it is smaller than the sum of its proper divisors (1407076788798).

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

1085031205578 is a wasteful number, since it uses less digits than its factorization.

1085031205578 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4157799 (or 4157796 counting only the distinct ones).

The product of its (nonzero) digits is 336000, while the sum is 45.

The spelling of 1085031205578 in words is "one trillion, eighty-five billion, thirty-one million, two hundred five thousand, five hundred seventy-eight".