18111883456772 has 18 divisors (see below), whose sum is σ = 36870619894542. Its totient is φ = 7762235767104.

The previous prime is 18111883456769. The next prime is 18111883456811. The reversal of 18111883456772 is 27765438811181.

It can be written as a sum of positive squares in only one way, i.e., 14047683904576 + 4064199552196 = 3748024^2 + 2015986^2 .

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 46203784133 + ... + 46203784524.

It is an arithmetic number, because the mean of its divisors is an integer number (2048367771919).

Almost surely, 2^{18111883456772} is an apocalyptic number.

It is an amenable number.

18111883456772 is an abundant number, since it is smaller than the sum of its proper divisors (18758736437770).

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

18111883456772 is a wasteful number, since it uses less digits than its factorization.

18111883456772 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 92407568675 (or 92407568666 counting only the distinct ones).

The product of its digits is 18063360, while the sum is 62.

The spelling of 18111883456772 in words is "eighteen trillion, one hundred eleven billion, eight hundred eighty-three million, four hundred fifty-six thousand, seven hundred seventy-two".