18069391120 has 160 divisors (see below), whose sum is σ = 48716453376. Its totient is φ = 6159974400.

The previous prime is 18069391061. The next prime is 18069391121. The reversal of 18069391120 is 2119396081.

It is a Harshad number since it is a multiple of its sum of digits (40).

It is not an unprimeable number, because it can be changed into a prime (18069391121) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 4051932 + ... + 4056388.

Almost surely, 2^18069391120 is an apocalyptic number.

18069391120 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 18069391120, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (24358226688).

18069391120 is an abundant number, since it is smaller than the sum of its proper divisors (30647062256).

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

18069391120 is a wasteful number, since it uses less digits than its factorization.

18069391120 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4769 (or 4763 counting only the distinct ones).

The product of its (nonzero) digits is 23328, while the sum is 40.

The spelling of 18069391120 in words is "eighteen billion, sixty-nine million, three hundred ninety-one thousand, one hundred twenty".