561711028166817 has 16 divisors (see below), whose sum is σ = 759606500229120. Its totient is φ = 369146313813200.

The previous prime is 561711028166809. The next prime is 561711028166857. The reversal of 561711028166817 is 718661820117165.

It is a happy number.

It is a cyclic number.

It is not a de Polignac number, because 561711028166817 - 2³ = 561711028166809 is a prime.

It is a super-2 number, since 2×561711028166817² (a number of 30 digits) contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (561711028166857) 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, 189320967 + ... + 192265052.

It is an arithmetic number, because the mean of its divisors is an integer number (47475406264320).

Almost surely, 2^{561711028166817} is an apocalyptic number.

It is an amenable number.

561711028166817 is a deficient number, since it is larger than the sum of its proper divisors (197895472062303).

561711028166817 is a wasteful number, since it uses less digits than its factorization.

561711028166817 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 381593004.

The product of its (nonzero) digits is 6773760, while the sum is 60.

The spelling of 561711028166817 in words is "five hundred sixty-one trillion, seven hundred eleven billion, twenty-eight million, one hundred sixty-six thousand, eight hundred seventeen".