1085578471081 has 6 divisors (see below), whose sum is σ = 1175508048750. Its totient is φ = 1002072434688.

The previous prime is 1085578471063. The next prime is 1085578471127. The reversal of 1085578471081 is 1801748755801.

1085578471081 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 3 ways, for example, as 31794099481 + 1053784371600 = 178309^2 + 1026540^2 .

It is not a de Polignac number, because 1085578471081 - 2⁷ = 1085578470953 is a prime.

It is a super-2 number, since 2×1085578471081² (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 (1085578471001) by changing a digit.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 3211770456 + ... + 3211770793.

It is an arithmetic number, because the mean of its divisors is an integer number (195918008125).

Almost surely, 2^{1085578471081} is an apocalyptic number.

It is an amenable number.

1085578471081 is a deficient number, since it is larger than the sum of its proper divisors (89929577669).

1085578471081 is an equidigital number, since it uses as much as digits as its factorization.

1085578471081 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 6423541275 (or 6423541262 counting only the distinct ones).

The product of its (nonzero) digits is 2508800, while the sum is 55.

The spelling of 1085578471081 in words is "one trillion, eighty-five billion, five hundred seventy-eight million, four hundred seventy-one thousand, eighty-one".