18081007722722 has 32 divisors (see below), whose sum is σ = 31075275912192. Its totient is φ = 7729212882384.

The previous prime is 18081007722677. The next prime is 18081007722781. The reversal of 18081007722722 is 22722770018081.

It is a happy number.

It is an unprimeable number.

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 15 ways as a sum of consecutive naturals, for example, 7551533 + ... + 9653375.

It is an arithmetic number, because the mean of its divisors is an integer number (971102372256).

Almost surely, 2^{18081007722722} is an apocalyptic number.

18081007722722 is a deficient number, since it is larger than the sum of its proper divisors (12994268189470).

18081007722722 is a wasteful number, since it uses less digits than its factorization.

18081007722722 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2103422.

The product of its (nonzero) digits is 351232, while the sum is 47.

The spelling of 18081007722722 in words is "eighteen trillion, eighty-one billion, seven million, seven hundred twenty-two thousand, seven hundred twenty-two".