561100011071 has 4 divisors (see below), whose sum is σ = 561116371200. Its totient is φ = 561083650944.

The previous prime is 561100011023. The next prime is 561100011083. The reversal of 561100011071 is 170110001165.

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

It is a cyclic number.

It is not a de Polignac number, because 561100011071 - 2¹⁰ = 561100010047 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (561100011091) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 8128511 + ... + 8197248.

It is an arithmetic number, because the mean of its divisors is an integer number (140279092800).

Almost surely, 2^561100011071 is an apocalyptic number.

561100011071 is a deficient number, since it is larger than the sum of its proper divisors (16360129).

561100011071 is a wasteful number, since it uses less digits than its factorization.

561100011071 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 16360128.

The product of its (nonzero) digits is 210, while the sum is 23.

The spelling of 561100011071 in words is "five hundred sixty-one billion, one hundred million, eleven thousand, seventy-one".