18000069000080 has 40 divisors (see below), whose sum is σ = 44311934571192. Its totient is φ = 6776496564224.

The previous prime is 18000068999993. The next prime is 18000069000083. The reversal of 18000069000080 is 8000096000081.

It can be written as a sum of positive squares in 4 ways, for example, as 9251038568704 + 8749030431376 = 3041552^2 + 2957876^2 .

It is a tau number, because it is divible by the number of its divisors (40).

It is a super-2 number, since 2×18000069000080² (a number of 27 digits) contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (18000069000083) 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, 6617671067 + ... + 6617673786.

Almost surely, 2^{18000069000080} is an apocalyptic number.

18000069000080 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

18000069000080 is an abundant number, since it is smaller than the sum of its proper divisors (26311865571112).

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

18000069000080 is a wasteful number, since it uses less digits than its factorization.

18000069000080 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 13235344883 (or 13235344877 counting only the distinct ones).

The product of its (nonzero) digits is 3456, while the sum is 32.

The spelling of 18000069000080 in words is "eighteen trillion, sixty-nine million, eighty", and thus it is an aban number and an uban number.