18202323354211 has 16 divisors (see below), whose sum is σ = 19205749231200. Its totient is φ = 17224655954688.

The previous prime is 18202323354161. The next prime is 18202323354251. The reversal of 18202323354211 is 11245332320281.

It is a cyclic number.

It is not a de Polignac number, because 18202323354211 - 2¹¹ = 18202323352163 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (18202323354251) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 4879341 + ... + 7759678.

It is an arithmetic number, because the mean of its divisors is an integer number (1200359326950).

Almost surely, 2^{18202323354211} is an apocalyptic number.

18202323354211 is a deficient number, since it is larger than the sum of its proper divisors (1003425876989).

18202323354211 is a wasteful number, since it uses less digits than its factorization.

18202323354211 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 12640038.

The product of its (nonzero) digits is 69120, while the sum is 37.

Adding to 18202323354211 its reverse (11245332320281), we get a palindrome (29447655674492).

The spelling of 18202323354211 in words is "eighteen trillion, two hundred two billion, three hundred twenty-three million, three hundred fifty-four thousand, two hundred eleven".