18516850018350 has 24 divisors (see below), whose sum is σ = 45921788045880. Its totient is φ = 4937826671520.

The previous prime is 18516850018283. The next prime is 18516850018357. The reversal of 18516850018350 is 5381005861581.

It is a junction number, because it is equal to n+sod(n) for n = 18516850018293 and 18516850018302.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (18516850018357) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 61722833245 + ... + 61722833544.

It is an arithmetic number, because the mean of its divisors is an integer number (1913407835245).

Almost surely, 2^{18516850018350} is an apocalyptic number.

18516850018350 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

18516850018350 is an abundant number, since it is smaller than the sum of its proper divisors (27404938027530).

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

18516850018350 is a wasteful number, since it uses less digits than its factorization.

18516850018350 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 123445666804 (or 123445666799 counting only the distinct ones).

The product of its (nonzero) digits is 1152000, while the sum is 51.

The spelling of 18516850018350 in words is "eighteen trillion, five hundred sixteen billion, eight hundred fifty million, eighteen thousand, three hundred fifty".