106561016566 has 8 divisors (see below), whose sum is σ = 160510318560. Its totient is φ = 53057577048.

The previous prime is 106561016563. The next prime is 106561016567. The reversal of 106561016566 is 665610165601.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a super-2 number, since 2×106561016566² (a number of 23 digits) contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (106561016563) 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, 111465021 + ... + 111465976.

It is an arithmetic number, because the mean of its divisors is an integer number (20063789820).

Almost surely, 2^106561016566 is an apocalyptic number.

106561016566 is a deficient number, since it is larger than the sum of its proper divisors (53949301994).

106561016566 is a wasteful number, since it uses less digits than its factorization.

106561016566 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 222931238.

The product of its (nonzero) digits is 194400, while the sum is 43.

The spelling of 106561016566 in words is "one hundred six billion, five hundred sixty-one million, sixteen thousand, five hundred sixty-six".