1083563083581 has 16 divisors (see below), whose sum is σ = 1590039478080. Its totient is φ = 650893349120.

The previous prime is 1083563083549. The next prime is 1083563083607. The reversal of 1083563083581 is 1853803653801.

It is a cyclic number.

It is not a de Polignac number, because 1083563083581 - 2⁵ = 1083563083549 is a prime.

It is a super-2 number, since 2×1083563083581² (a number of 25 digits) contains 22 as substring.

It is a Curzon number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1083563083481) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 145284966 + ... + 145292423.

It is an arithmetic number, because the mean of its divisors is an integer number (99377467380).

Almost surely, 2^{1083563083581} is an apocalyptic number.

1083563083581 is a gapful number since it is divisible by the number (11) formed by its first and last digit.

It is an amenable number.

1083563083581 is a deficient number, since it is larger than the sum of its proper divisors (506476394499).

1083563083581 is a wasteful number, since it uses less digits than its factorization.

1083563083581 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 290577516.

The product of its (nonzero) digits is 2073600, while the sum is 51.

The spelling of 1083563083581 in words is "one trillion, eighty-three billion, five hundred sixty-three million, eighty-three thousand, five hundred eighty-one".