17989418043 has 12 divisors (see below), whose sum is σ = 25986439440. Its totient is φ = 11992149456.

The previous prime is 17989418033. The next prime is 17989418089. The reversal of 17989418043 is 34081498971.

It is not a de Polignac number, because 17989418043 - 2²⁴ = 17972640827 is a prime.

It is not an unprimeable number, because it can be changed into a prime (17989418023) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 98338 + ... + 213656.

It is an arithmetic number, because the mean of its divisors is an integer number (2165536620).

Almost surely, 2^17989418043 is an apocalyptic number.

17989418043 is a deficient number, since it is larger than the sum of its proper divisors (7997021397).

17989418043 is a wasteful number, since it uses less digits than its factorization.

17989418043 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 132658 (or 132655 counting only the distinct ones).

The product of its (nonzero) digits is 1741824, while the sum is 54.

The spelling of 17989418043 in words is "seventeen billion, nine hundred eighty-nine million, four hundred eighteen thousand, forty-three".