18550055548 has 24 divisors (see below), whose sum is σ = 32939603424. Its totient is φ = 9138897600.

The previous prime is 18550055453. The next prime is 18550055633. The reversal of 18550055548 is 84555005581.

It is a hoax number, since the sum of its digits (46) coincides with the sum of the digits of its distinct prime factors.

It is a junction number, because it is equal to n+sod(n) for n = 18550055498 and 18550055507.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 475686 + ... + 513202.

It is an arithmetic number, because the mean of its divisors is an integer number (1372483476).

Almost surely, 2^18550055548 is an apocalyptic number.

It is an amenable number.

18550055548 is a deficient number, since it is larger than the sum of its proper divisors (14389547876).

18550055548 is a wasteful number, since it uses less digits than its factorization.

18550055548 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 39333 (or 39331 counting only the distinct ones).

The product of its (nonzero) digits is 800000, while the sum is 46.

The spelling of 18550055548 in words is "eighteen billion, five hundred fifty million, fifty-five thousand, five hundred forty-eight".