170561166061 has 24 divisors (see below), whose sum is σ = 201523810464. Its totient is φ = 143097514560.

The previous prime is 170561166043. The next prime is 170561166071. The reversal of 170561166061 is 160661165071.

It is not a de Polignac number, because 170561166061 - 2⁹ = 170561165549 is a prime.

It is a super-3 number, since 3×170561166061³ (a number of 35 digits) contains 333 as substring. Note that it is a super-d number also for d = 2.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (170561166011) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 14023795 + ... + 14035951.

It is an arithmetic number, because the mean of its divisors is an integer number (8396825436).

Almost surely, 2^170561166061 is an apocalyptic number.

170561166061 is a gapful number since it is divisible by the number (11) formed by its first and last digit.

It is an amenable number.

170561166061 is a deficient number, since it is larger than the sum of its proper divisors (30962644403).

170561166061 is a wasteful number, since it uses less digits than its factorization.

170561166061 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 19741 (or 19728 counting only the distinct ones).

The product of its (nonzero) digits is 45360, while the sum is 40.

The spelling of 170561166061 in words is "one hundred seventy billion, five hundred sixty-one million, one hundred sixty-six thousand, sixty-one".