18363061311 has 16 divisors (see below), whose sum is σ = 27997611264. Its totient is φ = 10487251584.

The previous prime is 18363061303. The next prime is 18363061313. The reversal of 18363061311 is 11316036381.

It is a happy number.

It is not a de Polignac number, because 18363061311 - 2³ = 18363061303 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (18363061313) 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, 208725 + ... + 283358.

It is an arithmetic number, because the mean of its divisors is an integer number (1749850704).

Almost surely, 2^18363061311 is an apocalyptic number.

18363061311 is a deficient number, since it is larger than the sum of its proper divisors (9634549953).

18363061311 is a wasteful number, since it uses less digits than its factorization.

18363061311 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 493870.

The product of its (nonzero) digits is 7776, while the sum is 33.

Adding to 18363061311 its reverse (11316036381), we get a palindrome (29679097692).

The spelling of 18363061311 in words is "eighteen billion, three hundred sixty-three million, sixty-one thousand, three hundred eleven".