4811086909561 has 3 divisors (see below), whose sum is σ = 4811089102981. Its totient is φ = 4811084716142.

The previous prime is 4811086909529. The next prime is 4811086909579. The reversal of 4811086909561 is 1659096801184.

The square root of 4811086909561 is 2193419.

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 is not a de Polignac number, because 4811086909561 - 2⁵ = 4811086909529 is a prime.

It is a Smith number, since the sum of its digits (58) coincides with the sum of the digits of its prime factors.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 4811086909496 and 4811086909505.

It is not an unprimeable number, because it can be changed into a prime (4811086409561) 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, 1096710 + ... + 3290128.

Almost surely, 2^{4811086909561} is an apocalyptic number.

4811086909561 is the 2193419-th square number.

4811086909561 is the 1096710-th centered octagonal number.

It is an amenable number.

4811086909561 is a deficient number, since it is larger than the sum of its proper divisors (2193420).

4811086909561 is an frugal number, since it uses more digits than its factorization.

4811086909561 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4386838 (or 2193419 counting only the distinct ones).

The product of its (nonzero) digits is 3732480, while the sum is 58.

The spelling of 4811086909561 in words is "four trillion, eight hundred eleven billion, eighty-six million, nine hundred nine thousand, five hundred sixty-one".