561667222839 has 16 divisors (see below), whose sum is σ = 790007513600. Its totient is φ = 353971005696.

The previous prime is 561667222819. The next prime is 561667222867. The reversal of 561667222839 is 938222766165.

It is not a de Polignac number, because 561667222839 - 2⁹ = 561667222327 is a prime.

It is a Smith number, since the sum of its digits (57) coincides with the sum of the digits of its prime factors. Since it is squarefree, it is also a hoax number.

It is a Harshad number since it is a multiple of its sum of digits (57).

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (561667222819) 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, 10614874 + ... + 10667655.

It is an arithmetic number, because the mean of its divisors is an integer number (49375469600).

Almost surely, 2^561667222839 is an apocalyptic number.

561667222839 is a deficient number, since it is larger than the sum of its proper divisors (228340290761).

561667222839 is a wasteful number, since it uses less digits than its factorization.

561667222839 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 21283014.

The product of its digits is 13063680, while the sum is 57.

The spelling of 561667222839 in words is "five hundred sixty-one billion, six hundred sixty-seven million, two hundred twenty-two thousand, eight hundred thirty-nine".