168786252872 has 32 divisors (see below), whose sum is σ = 321865228920. Its totient is φ = 82957271040.

The previous prime is 168786252847. The next prime is 168786252931. The reversal of 168786252872 is 278252687861.

It can be written as a sum of positive squares in 4 ways, for example, as 52050597316 + 116735655556 = 228146^2 + 341666^2 .

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 671048 + ... + 887624.

Almost surely, 2^168786252872 is an apocalyptic number.

It is an amenable number.

168786252872 is a deficient number, since it is larger than the sum of its proper divisors (153078976048).

168786252872 is a wasteful number, since it uses less digits than its factorization.

168786252872 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 218241 (or 218237 counting only the distinct ones).

The product of its digits is 36126720, while the sum is 62.

The spelling of 168786252872 in words is "one hundred sixty-eight billion, seven hundred eighty-six million, two hundred fifty-two thousand, eight hundred seventy-two".