18336278776 has 48 divisors (see below), whose sum is σ = 37863018000. Its totient is φ = 8307940608.

The previous prime is 18336278771. The next prime is 18336278783. The reversal of 18336278776 is 67787263381.

It is a self number, because there is not a number n which added to its sum of digits gives 18336278776.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (18336278771) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 71601 + ... + 204448.

It is an arithmetic number, because the mean of its divisors is an integer number (788812875).

Almost surely, 2^18336278776 is an apocalyptic number.

It is an amenable number.

18336278776 is an abundant number, since it is smaller than the sum of its proper divisors (19526739224).

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

18336278776 is a wasteful number, since it uses less digits than its factorization.

18336278776 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 276116 (or 276093 counting only the distinct ones).

The product of its digits is 14224896, while the sum is 58.

The spelling of 18336278776 in words is "eighteen billion, three hundred thirty-six million, two hundred seventy-eight thousand, seven hundred seventy-six".