1099580834881 has 3 divisors (see below), whose sum is σ = 1099581883491. Its totient is φ = 1099579786272.

The previous prime is 1099580834857. The next prime is 1099580834887. The reversal of 1099580834881 is 1884380859901.

The square root of 1099580834881 is 1048609.

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., 760717140481 + 338863694400 = 872191^2 + 582120^2 .

It is not a de Polignac number, because 1099580834881 - 2¹⁵ = 1099580802113 is a prime.

It is a super-2 number, since 2×1099580834881² (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 (1099580834887) by changing a digit.

It is a polite number, since it can be written in 2 ways as a sum of consecutive naturals, for example, 524305 + ... + 1572913.

It is an arithmetic number, because the mean of its divisors is an integer number (366527294497).

Almost surely, 2^{1099580834881} is an apocalyptic number.

1099580834881 is the 1048609-th square number.

1099580834881 is the 524305-th centered octagonal number.

It is an amenable number.

1099580834881 is a deficient number, since it is larger than the sum of its proper divisors (1048610).

1099580834881 is an frugal number, since it uses more digits than its factorization.

1099580834881 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2097218 (or 1048609 counting only the distinct ones).

The product of its (nonzero) digits is 19906560, while the sum is 64.

Multiplying 1099580834881 by its sum of digits (64), we get a square (70373173432384 = 8388872²).

The spelling of 1099580834881 in words is "one trillion, ninety-nine billion, five hundred eighty million, eight hundred thirty-four thousand, eight hundred eighty-one".