56018026166 has 4 divisors (see below), whose sum is σ = 84027039252. Its totient is φ = 28009013082.

The previous prime is 56018026151. The next prime is 56018026171. The reversal of 56018026166 is 66162081065.

It is a happy number.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 66162081065 = 5 ⋅13232416213.

It is a Curzon number.

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, 14004506540 + ... + 14004506543.

It is an arithmetic number, because the mean of its divisors is an integer number (21006759813).

Almost surely, 2^56018026166 is an apocalyptic number.

56018026166 is a deficient number, since it is larger than the sum of its proper divisors (28009013086).

56018026166 is a wasteful number, since it uses less digits than its factorization.

56018026166 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 28009013085.

The product of its (nonzero) digits is 103680, while the sum is 41.

The spelling of 56018026166 in words is "fifty-six billion, eighteen million, twenty-six thousand, one hundred sixty-six".