18336836771 has 32 divisors (see below), whose sum is σ = 20812861440. Its totient is φ = 16008883200.

The previous prime is 18336836747. The next prime is 18336836773. The reversal of 18336836771 is 17763863381.

It is a cyclic number.

It is not a de Polignac number, because 18336836771 - 2¹⁴ = 18336820387 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (18336836773) 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, 10804595 + ... + 10806291.

It is an arithmetic number, because the mean of its divisors is an integer number (650401920).

Almost surely, 2^18336836771 is an apocalyptic number.

18336836771 is a gapful number since it is divisible by the number (11) formed by its first and last digit.

18336836771 is a deficient number, since it is larger than the sum of its proper divisors (2476024669).

18336836771 is a wasteful number, since it uses less digits than its factorization.

18336836771 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2075.

The product of its digits is 3048192, while the sum is 53.

The spelling of 18336836771 in words is "eighteen billion, three hundred thirty-six million, eight hundred thirty-six thousand, seven hundred seventy-one".