18143780045988 has 24 divisors (see below), whose sum is σ = 42336475897408. Its totient is φ = 6047785378656.

The previous prime is 18143780045947. The next prime is 18143780046013. The reversal of 18143780045988 is 88954008734181.

It is a super-2 number, since 2×18143780045988² (a number of 27 digits) contains 22 as substring.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 17127256 + ... + 18155727.

Almost surely, 2^{18143780045988} is an apocalyptic number.

It is an amenable number.

18143780045988 is an abundant number, since it is smaller than the sum of its proper divisors (24192695851420).

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

18143780045988 is a wasteful number, since it uses less digits than its factorization.

18143780045988 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 35325843 (or 35325841 counting only the distinct ones).

The product of its (nonzero) digits is 61931520, while the sum is 66.

The spelling of 18143780045988 in words is "eighteen trillion, one hundred forty-three billion, seven hundred eighty million, forty-five thousand, nine hundred eighty-eight".