18675609552 has 240 divisors, whose sum is σ = 56575628928. Its totient is φ = 5735854080.

The previous prime is 18675609541. The next prime is 18675609571. The reversal of 18675609552 is 25590657681.

18675609552 is a `hidden beast` number, since 1 + 86 + 7 + 5 + 6 + 0 + 9 + 552 = 666.

It is a Smith number, since the sum of its digits (54) coincides with the sum of the digits of its prime factors.

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 47 ways as a sum of consecutive naturals, for example, 11269908 + ... + 11271564.

Almost surely, 2^18675609552 is an apocalyptic number.

18675609552 is a gapful number since it is divisible by the number (12) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 18675609552, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (28287814464).

18675609552 is an abundant number, since it is smaller than the sum of its proper divisors (37900019376).

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

18675609552 is a wasteful number, since it uses less digits than its factorization.

18675609552 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1818 (or 1809 counting only the distinct ones).

The product of its (nonzero) digits is 4536000, while the sum is 54.

The spelling of 18675609552 in words is "eighteen billion, six hundred seventy-five million, six hundred nine thousand, five hundred fifty-two".