18069457152 has 72 divisors (see below), whose sum is σ = 48360140640. Its totient is φ = 5989457920.

The previous prime is 18069457151. The next prime is 18069457157. The reversal of 18069457152 is 25175496081.

It is a happy number.

It is a super-2 number, since 2×18069457152² (a number of 21 digits) contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (48).

It is not an unprimeable number, because it can be changed into a prime (18069457151) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 71752 + ... + 203192.

It is an arithmetic number, because the mean of its divisors is an integer number (671668620).

Almost surely, 2^18069457152 is an apocalyptic number.

18069457152 is a gapful number since it is divisible by the number (12) 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 18069457152, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (24180070320).

18069457152 is an abundant number, since it is smaller than the sum of its proper divisors (30290683488).

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

18069457152 is a wasteful number, since it uses less digits than its factorization.

18069457152 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 131639 (or 131625 counting only the distinct ones).

The product of its (nonzero) digits is 604800, while the sum is 48.

The spelling of 18069457152 in words is "eighteen billion, sixty-nine million, four hundred fifty-seven thousand, one hundred fifty-two".