168606913312 has 48 divisors (see below), whose sum is σ = 336667355640. Its totient is φ = 83105298432.

The previous prime is 168606913261. The next prime is 168606913337. The reversal of 168606913312 is 213319606861.

It can be written as a sum of positive squares in 4 ways, for example, as 162244617616 + 6362295696 = 402796^2 + 79764^2 .

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 4721958 + ... + 4757530.

Almost surely, 2^168606913312 is an apocalyptic number.

It is an amenable number.

168606913312 is a deficient number, since it is larger than the sum of its proper divisors (168060442328).

168606913312 is a wasteful number, since it uses less digits than its factorization.

168606913312 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 37685 (or 37677 counting only the distinct ones).

The product of its (nonzero) digits is 279936, while the sum is 46.

The spelling of 168606913312 in words is "one hundred sixty-eight billion, six hundred six million, nine hundred thirteen thousand, three hundred twelve".