84043450018 has 16 divisors (see below), whose sum is σ = 145615389984. Its totient is φ = 35954416960.

The previous prime is 84043450009. The next prime is 84043450019. The reversal of 84043450018 is 81005434048.

It is not an unprimeable number, because it can be changed into a prime (84043450019) 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, 112357180 + ... + 112357927.

It is an arithmetic number, because the mean of its divisors is an integer number (9100961874).

Almost surely, 2^84043450018 is an apocalyptic number.

84043450018 is a deficient number, since it is larger than the sum of its proper divisors (61571939966).

84043450018 is a wasteful number, since it uses less digits than its factorization.

84043450018 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 224715137.

The product of its (nonzero) digits is 61440, while the sum is 37.

It can be divided in two parts, 84043 and 450018, that added together give a triangular number (534061 = T₁₀₃₃).

The spelling of 84043450018 in words is "eighty-four billion, forty-three million, four hundred fifty thousand, eighteen".