84180335644 has 24 divisors (see below), whose sum is σ = 147604169888. Its totient is φ = 42007775040.

The previous prime is 84180335623. The next prime is 84180335671. The reversal of 84180335644 is 44653308148.

It is a junction number, because it is equal to n+sod(n) for n = 84180335594 and 84180335603.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 7389577 + ... + 7400959.

Almost surely, 2^84180335644 is an apocalyptic number.

It is an amenable number.

84180335644 is a deficient number, since it is larger than the sum of its proper divisors (63423834244).

84180335644 is a wasteful number, since it uses less digits than its factorization.

84180335644 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 14845 (or 14843 counting only the distinct ones).

The product of its (nonzero) digits is 1105920, while the sum is 46.

The spelling of 84180335644 in words is "eighty-four billion, one hundred eighty million, three hundred thirty-five thousand, six hundred forty-four".