56671663704067 has 4 divisors (see below), whose sum is σ = 56671681290016. Its totient is φ = 56671646118120.

The previous prime is 56671663703989. The next prime is 56671663704079. The reversal of 56671663704067 is 76040736617665.

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

It is a cyclic number.

It is not a de Polignac number, because 56671663704067 - 2³¹ = 56669516220419 is a prime.

It is a super-3 number, since 3×56671663704067³ (a number of 42 digits) contains 333 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (56671663704167) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 2418984 + ... + 10917637.

It is an arithmetic number, because the mean of its divisors is an integer number (14167920322504).

Almost surely, 2^{56671663704067} is an apocalyptic number.

56671663704067 is a deficient number, since it is larger than the sum of its proper divisors (17585949).

56671663704067 is a wasteful number, since it uses less digits than its factorization.

56671663704067 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 17585948.

The product of its (nonzero) digits is 160030080, while the sum is 64.

The spelling of 56671663704067 in words is "fifty-six trillion, six hundred seventy-one billion, six hundred sixty-three million, seven hundred four thousand, sixty-seven".