68667555146 has 8 divisors (see below), whose sum is σ = 103056331044. Its totient is φ = 34315444800.

The previous prime is 68667555071. The next prime is 68667555163. The reversal of 68667555146 is 64155576686.

It can be written as a sum of positive squares in 2 ways, for example, as 64630350625 + 4037204521 = 254225^2 + 63539^2 .

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

It is a Curzon number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 9161705 + ... + 9169196.

Almost surely, 2^68667555146 is an apocalyptic number.

68667555146 is a deficient number, since it is larger than the sum of its proper divisors (34388775898).

68667555146 is a wasteful number, since it uses less digits than its factorization.

68667555146 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 18332776.

The product of its digits is 36288000, while the sum is 59.

The spelling of 68667555146 in words is "sixty-eight billion, six hundred sixty-seven million, five hundred fifty-five thousand, one hundred forty-six".