1085432669281 has 3 divisors (see below), whose sum is σ = 1085433711123. Its totient is φ = 1085431627440.

The previous prime is 1085432669261. The next prime is 1085432669297. The reversal of 1085432669281 is 1829662345801.

The square root of 1085432669281 is 1041841.

It is a perfect power (a square), and thus also a powerful number.

It is a semiprime because it is the product of two primes, and also a brilliant number, because the two primes have the same length.

It can be written as a sum of positive squares in only one way, i.e., 428554838881 + 656877830400 = 654641^2 + 810480^2 .

It is not a de Polignac number, because 1085432669281 - 2⁵ = 1085432669249 is a prime.

It is a super-2 number, since 2×1085432669281² (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 (1085432669261) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 2 ways as a sum of consecutive naturals, for example, 520921 + ... + 1562761.

It is an arithmetic number, because the mean of its divisors is an integer number (361811237041).

Almost surely, 2^{1085432669281} is an apocalyptic number.

1085432669281 is the 1041841-st square number.

1085432669281 is the 520921-st centered octagonal number.

It is an amenable number.

1085432669281 is a deficient number, since it is larger than the sum of its proper divisors (1041842).

1085432669281 is an frugal number, since it uses more digits than its factorization.

1085432669281 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2083682 (or 1041841 counting only the distinct ones).

The product of its (nonzero) digits is 4976640, while the sum is 55.

The spelling of 1085432669281 in words is "one trillion, eighty-five billion, four hundred thirty-two million, six hundred sixty-nine thousand, two hundred eighty-one".