168152655893661 has 24 divisors (see below), whose sum is σ = 251653355597280. Its totient is φ = 108067862187936.

The previous prime is 168152655893543. The next prime is 168152655893699. The reversal of 168152655893661 is 166398556251861.

168152655893661 is a `hidden beast` number, since 1 + 6 + 8 + 1 + 5 + 2 + 6 + 5 + 589 + 36 + 6 + 1 = 666.

It is not a de Polignac number, because 168152655893661 - 2²⁷ = 168152521675933 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 168152655893661.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (168152655894661) 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, 500814331 + ... + 501149976.

It is an arithmetic number, because the mean of its divisors is an integer number (10485556483220).

Almost surely, 2^{168152655893661} is an apocalyptic number.

It is an amenable number.

168152655893661 is a deficient number, since it is larger than the sum of its proper divisors (83500699703619).

168152655893661 is a wasteful number, since it uses less digits than its factorization.

168152655893661 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1001964985 (or 1001964982 counting only the distinct ones).

The product of its digits is 559872000, while the sum is 72.

The spelling of 168152655893661 in words is "one hundred sixty-eight trillion, one hundred fifty-two billion, six hundred fifty-five million, eight hundred ninety-three thousand, six hundred sixty-one".