561061045211 has 4 divisors (see below), whose sum is σ = 564776681424. Its totient is φ = 557345409000.

The previous prime is 561061045187. The next prime is 561061045241. The reversal of 561061045211 is 112540160165.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-561061045211 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (561061045241) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1857817880 + ... + 1857818181.

It is an arithmetic number, because the mean of its divisors is an integer number (141194170356).

Almost surely, 2^561061045211 is an apocalyptic number.

561061045211 is a deficient number, since it is larger than the sum of its proper divisors (3715636213).

561061045211 is a wasteful number, since it uses less digits than its factorization.

561061045211 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3715636212.

The product of its (nonzero) digits is 7200, while the sum is 32.

The spelling of 561061045211 in words is "five hundred sixty-one billion, sixty-one million, forty-five thousand, two hundred eleven".