18516685016850 has 48 divisors (see below), whose sum is σ = 45933392134272. Its totient is φ = 4936490919360.

The previous prime is 18516685016827. The next prime is 18516685016867. The reversal of 18516685016850 is 5861058661581.

It is an unprimeable number.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 15571537 + ... + 16718436.

It is an arithmetic number, because the mean of its divisors is an integer number (956945669464).

Almost surely, 2^{18516685016850} is an apocalyptic number.

18516685016850 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

18516685016850 is an abundant number, since it is smaller than the sum of its proper divisors (27416707117422).

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

18516685016850 is a wasteful number, since it uses less digits than its factorization.

18516685016850 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 32293811 (or 32293806 counting only the distinct ones).

The product of its (nonzero) digits is 13824000, while the sum is 60.

The spelling of 18516685016850 in words is "eighteen trillion, five hundred sixteen billion, six hundred eighty-five million, sixteen thousand, eight hundred fifty".