56643550118 has 4 divisors (see below), whose sum is σ = 84965325180. Its totient is φ = 28321775058.

The previous prime is 56643550091. The next prime is 56643550133. The reversal of 56643550118 is 81105534665.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 81105534665 = 5 ⋅16221106933.

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, 14160887528 + ... + 14160887531.

It is an arithmetic number, because the mean of its divisors is an integer number (21241331295).

Almost surely, 2^56643550118 is an apocalyptic number.

56643550118 is a deficient number, since it is larger than the sum of its proper divisors (28321775062).

56643550118 is a wasteful number, since it uses less digits than its factorization.

56643550118 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 28321775061.

The product of its (nonzero) digits is 432000, while the sum is 44.

The spelling of 56643550118 in words is "fifty-six billion, six hundred forty-three million, five hundred fifty thousand, one hundred eighteen".