561111673291 has 16 divisors (see below), whose sum is σ = 605677824864. Its totient is φ = 516747458304.

The previous prime is 561111673229. The next prime is 561111673337. The reversal of 561111673291 is 192376111165.

It is a cyclic number.

It is not a de Polignac number, because 561111673291 - 2¹³ = 561111665099 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (561111673201) 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 15 ways as a sum of consecutive naturals, for example, 9845620 + ... + 9902446.

It is an arithmetic number, because the mean of its divisors is an integer number (37854864054).

Almost surely, 2^561111673291 is an apocalyptic number.

561111673291 is a deficient number, since it is larger than the sum of its proper divisors (44566151573).

561111673291 is a wasteful number, since it uses less digits than its factorization.

561111673291 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 58590.

The product of its digits is 68040, while the sum is 43.

The spelling of 561111673291 in words is "five hundred sixty-one billion, one hundred eleven million, six hundred seventy-three thousand, two hundred ninety-one".