84180539944 has 16 divisors (see below), whose sum is σ = 157841735220. Its totient is φ = 42089410560.

The previous prime is 84180539929. The next prime is 84180539953. The reversal of 84180539944 is 44993508148.

It can be written as a sum of positive squares in 2 ways, for example, as 81824602500 + 2355937444 = 286050^2 + 48538^2 .

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 534502 + ... + 673834.

Almost surely, 2^84180539944 is an apocalyptic number.

It is an amenable number.

84180539944 is a deficient number, since it is larger than the sum of its proper divisors (73661195276).

84180539944 is a wasteful number, since it uses less digits than its factorization.

84180539944 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 214860 (or 214856 counting only the distinct ones).

The product of its (nonzero) digits is 4976640, while the sum is 55.

The spelling of 84180539944 in words is "eighty-four billion, one hundred eighty million, five hundred thirty-nine thousand, nine hundred forty-four".