18033615844881 has 32 divisors (see below), whose sum is σ = 29594122924800. Its totient is φ = 9512077204224.

The previous prime is 18033615844847. The next prime is 18033615844919. The reversal of 18033615844881 is 18844851633081.

It is not a de Polignac number, because 18033615844881 - 2⁷ = 18033615844753 is a prime.

It is a super-2 number, since 2×18033615844881² (a number of 27 digits) contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (18033615844801) 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, 16716651 + ... + 17762703.

It is an arithmetic number, because the mean of its divisors is an integer number (924816341400).

Almost surely, 2^{18033615844881} is an apocalyptic number.

It is an amenable number.

18033615844881 is a deficient number, since it is larger than the sum of its proper divisors (11560507079919).

18033615844881 is a wasteful number, since it uses less digits than its factorization.

18033615844881 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1109225.

The product of its (nonzero) digits is 17694720, while the sum is 60.

The spelling of 18033615844881 in words is "eighteen trillion, thirty-three billion, six hundred fifteen million, eight hundred forty-four thousand, eight hundred eighty-one".