18508350017508 has 48 divisors (see below), whose sum is σ = 48955959568320. Its totient is φ = 5395146562944.

The previous prime is 18508350017501. The next prime is 18508350017537. The reversal of 18508350017508 is 80571005380581.

It is not an unprimeable number, because it can be changed into a prime (18508350017501) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 3122188335 + ... + 3122194262.

It is an arithmetic number, because the mean of its divisors is an integer number (1019915824340).

Almost surely, 2^{18508350017508} is an apocalyptic number.

It is an amenable number.

18508350017508 is an abundant number, since it is smaller than the sum of its proper divisors (30447609550812).

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

18508350017508 is a wasteful number, since it uses less digits than its factorization.

18508350017508 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 6244382636 (or 6244382634 counting only the distinct ones).

The product of its (nonzero) digits is 1344000, while the sum is 51.

The spelling of 18508350017508 in words is "eighteen trillion, five hundred eight billion, three hundred fifty million, seventeen thousand, five hundred eight".