66667886134 has 4 divisors (see below), whose sum is σ = 100001829204. Its totient is φ = 33333943066.

The previous prime is 66667886119. The next prime is 66667886143. The reversal of 66667886134 is 43168876666.

It is a happy number.

It is a semiprime because it is the product of two primes.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 16666971532 + ... + 16666971535.

It is an arithmetic number, because the mean of its divisors is an integer number (25000457301).

Almost surely, 2^66667886134 is an apocalyptic number.

66667886134 is a deficient number, since it is larger than the sum of its proper divisors (33333943070).

66667886134 is a wasteful number, since it uses less digits than its factorization.

66667886134 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 33333943069.

The product of its digits is 41803776, while the sum is 61.

The spelling of 66667886134 in words is "sixty-six billion, six hundred sixty-seven million, eight hundred eighty-six thousand, one hundred thirty-four".