56666888806386 has 8 divisors (see below), whose sum is σ = 113333777612784. Its totient is φ = 18888962935460.

The previous prime is 56666888806349. The next prime is 56666888806427. The reversal of 56666888806386 is 68360888866665.

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

56666888806386 is an admirable number.

It is a super-2 number, since 2×56666888806386² (a number of 28 digits) contains 22 as substring.

It is a Curzon number.

It is a junction number, because it is equal to n+sod(n) for n = 56666888806299 and 56666888806308.

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, 4722240733860 + ... + 4722240733871.

It is an arithmetic number, because the mean of its divisors is an integer number (14166722201598).

Almost surely, 2^{56666888806386} is an apocalyptic number.

56666888806386 is a primitive abundant number, since it is smaller than the sum of its proper divisors, none of which is abundant.

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

56666888806386 is a wasteful number, since it uses less digits than its factorization.

56666888806386 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 9444481467736.

The product of its (nonzero) digits is 22932357120, while the sum is 84.

The spelling of 56666888806386 in words is "fifty-six trillion, six hundred sixty-six billion, eight hundred eighty-eight million, eight hundred six thousand, three hundred eighty-six".