18850350533556 has 96 divisors (see below), whose sum is σ = 46472735232000. Its totient is φ = 5937215310208.

The previous prime is 18850350533551. The next prime is 18850350533557. The reversal of 18850350533556 is 65533505305881.

It is a junction number, because it is equal to n+sod(n) for n = 18850350533496 and 18850350533505.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (18850350533551) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 237433075 + ... + 237512453.

It is an arithmetic number, because the mean of its divisors is an integer number (484090992000).

Almost surely, 2^{18850350533556} is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 18850350533556, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (23236367616000).

18850350533556 is an abundant number, since it is smaller than the sum of its proper divisors (27622384698444).

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

18850350533556 is a wasteful number, since it uses less digits than its factorization.

18850350533556 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 93981 (or 93979 counting only the distinct ones).

The product of its (nonzero) digits is 32400000, while the sum is 57.

The spelling of 18850350533556 in words is "eighteen trillion, eight hundred fifty billion, three hundred fifty million, five hundred thirty-three thousand, five hundred fifty-six".