18000045000029 has 4 divisors (see below), whose sum is σ = 18012433194876. Its totient is φ = 17987656805184.

The previous prime is 18000045000001. The next prime is 18000045000061. The reversal of 18000045000029 is 92000054000081.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 13552691234404 + 4447353765625 = 3681398^2 + 2108875^2 .

It is a cyclic number.

It is not a de Polignac number, because 18000045000029 - 2⁴⁰ = 16900533372253 is a prime.

It is a super-2 number, since 2×18000045000029² (a number of 27 digits) contains 22 as substring.

It is a pancake number, because a pancake can be divided into 18000045000029 parts by 6000007 straight cuts.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 18000044999965 and 18000045000010.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (18000045002029) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 6194095244 + ... + 6194098149.

It is an arithmetic number, because the mean of its divisors is an integer number (4503108298719).

Almost surely, 2^{18000045000029} is an apocalyptic number.

It is an amenable number.

18000045000029 is a deficient number, since it is larger than the sum of its proper divisors (12388194847).

18000045000029 is a wasteful number, since it uses less digits than its factorization.

18000045000029 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 12388194846.

The product of its (nonzero) digits is 2880, while the sum is 29.

The spelling of 18000045000029 in words is "eighteen trillion, forty-five million, twenty-nine", and thus it is an aban number and an uban number.