18033244664 has 32 divisors (see below), whose sum is σ = 34373445120. Its totient is φ = 8867969376.

The previous prime is 18033244657. The next prime is 18033244681. The reversal of 18033244664 is 46644233081.

It is a super-3 number, since 3×18033244664³ (a number of 32 digits) contains 333 as substring. Note that it is a super-d number also for d = 2.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 87179 + ... + 208965.

It is an arithmetic number, because the mean of its divisors is an integer number (1074170160).

Almost surely, 2^18033244664 is an apocalyptic number.

It is an amenable number.

18033244664 is a deficient number, since it is larger than the sum of its proper divisors (16340200456).

18033244664 is a wasteful number, since it uses less digits than its factorization.

18033244664 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 122099 (or 122095 counting only the distinct ones).

The product of its (nonzero) digits is 331776, while the sum is 41.

The spelling of 18033244664 in words is "eighteen billion, thirty-three million, two hundred forty-four thousand, six hundred sixty-four".