18033163512 has 128 divisors (see below), whose sum is σ = 57276764160. Its totient is φ = 4602562560.

The previous prime is 18033163487. The next prime is 18033163541. The reversal of 18033163512 is 21536133081.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 65473 + ... + 200880.

It is an arithmetic number, because the mean of its divisors is an integer number (447474720).

Almost surely, 2^18033163512 is an apocalyptic number.

18033163512 is a gapful number since it is divisible by the number (12) formed by its first and last digit.

It is an amenable number.

18033163512 is an abundant number, since it is smaller than the sum of its proper divisors (39243600648).

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

18033163512 is a wasteful number, since it uses less digits than its factorization.

18033163512 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 266413 (or 266409 counting only the distinct ones).

The product of its (nonzero) digits is 12960, while the sum is 33.

Adding to 18033163512 its reverse (21536133081), we get a palindrome (39569296593).

The spelling of 18033163512 in words is "eighteen billion, thirty-three million, one hundred sixty-three thousand, five hundred twelve".