84040453684 has 18 divisors (see below), whose sum is σ = 161656328162. Its totient is φ = 38200206000.

The previous prime is 84040453667. The next prime is 84040453699. The reversal of 84040453684 is 48635404048.

It is a happy number.

It can be written as a sum of positive squares in only one way, i.e., 79608622500 + 4431831184 = 282150^2 + 66572^2 .

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 86818167 + ... + 86819134.

Almost surely, 2^84040453684 is an apocalyptic number.

It is an amenable number.

84040453684 is a deficient number, since it is larger than the sum of its proper divisors (77615874478).

84040453684 is a wasteful number, since it uses less digits than its factorization.

84040453684 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 173637327 (or 173637314 counting only the distinct ones).

The product of its (nonzero) digits is 1474560, while the sum is 46.

The spelling of 84040453684 in words is "eighty-four billion, forty million, four hundred fifty-three thousand, six hundred eighty-four".