1061111060561 has 8 divisors (see below), whose sum is σ = 1061945639040. Its totient is φ = 1060276810608.

The previous prime is 1061111060557. The next prime is 1061111060567. The reversal of 1061111060561 is 1650601111601.

It is a happy number.

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

It is a cyclic number.

It is not a de Polignac number, because 1061111060561 - 2² = 1061111060557 is a prime.

It is a super-2 number, since 2×1061111060561² (a number of 25 digits) contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (1061111060567) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 6591650 + ... + 6750708.

It is an arithmetic number, because the mean of its divisors is an integer number (132743204880).

Almost surely, 2^{1061111060561} is an apocalyptic number.

It is an amenable number.

1061111060561 is a deficient number, since it is larger than the sum of its proper divisors (834578479).

1061111060561 is a wasteful number, since it uses less digits than its factorization.

1061111060561 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 164263.

The product of its (nonzero) digits is 1080, while the sum is 29.

The spelling of 1061111060561 in words is "one trillion, sixty-one billion, one hundred eleven million, sixty thousand, five hundred sixty-one".