18028030508040 has 96 divisors (see below), whose sum is σ = 62914147303680. Its totient is φ = 4120692686208.

The previous prime is 18028030508029. The next prime is 18028030508041. The reversal of 18028030508040 is 4080503082081.

It is a self number, because there is not a number n which added to its sum of digits gives 18028030508040.

It is not an unprimeable number, because it can be changed into a prime (18028030508041) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 1532989912 + ... + 1533001671.

It is an arithmetic number, because the mean of its divisors is an integer number (655355701080).

Almost surely, 2^{18028030508040} is an apocalyptic number.

18028030508040 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

18028030508040 is an abundant number, since it is smaller than the sum of its proper divisors (44886116795640).

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

18028030508040 is a wasteful number, since it uses less digits than its factorization.

18028030508040 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3065991611 (or 3065991600 counting only the distinct ones).

The product of its (nonzero) digits is 61440, while the sum is 39.

The spelling of 18028030508040 in words is "eighteen trillion, twenty-eight billion, thirty million, five hundred eight thousand, forty".