10819843561 has 16 divisors (see below), whose sum is σ = 11062814400. Its totient is φ = 10579060800.

The previous prime is 10819843547. The next prime is 10819843577. The reversal of 10819843561 is 16534891801.

It is a cyclic number.

It is not a de Polignac number, because 10819843561 - 2²⁷ = 10685625833 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (10819843501) 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, 16368571 + ... + 16369231.

It is an arithmetic number, because the mean of its divisors is an integer number (691425900).

Almost surely, 2^10819843561 is an apocalyptic number.

It is an amenable number.

10819843561 is a deficient number, since it is larger than the sum of its proper divisors (242970839).

10819843561 is an equidigital number, since it uses as much as digits as its factorization.

10819843561 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1800.

The product of its (nonzero) digits is 207360, while the sum is 46.

The spelling of 10819843561 in words is "ten billion, eight hundred nineteen million, eight hundred forty-three thousand, five hundred sixty-one".