84001684040 has 16 divisors (see below), whose sum is σ = 189003789180. Its totient is φ = 33600673600.

The previous prime is 84001684021. The next prime is 84001684079. The reversal of 84001684040 is 4048610048.

It can be written as a sum of positive squares in 2 ways, for example, as 70192143844 + 13809540196 = 264938^2 + 117514^2 .

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, 1050021011 + ... + 1050021090.

Almost surely, 2^84001684040 is an apocalyptic number.

It is an amenable number.

84001684040 is an abundant number, since it is smaller than the sum of its proper divisors (105002105140).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

84001684040 is a wasteful number, since it uses less digits than its factorization.

84001684040 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2100042112 (or 2100042108 counting only the distinct ones).

The product of its (nonzero) digits is 24576, while the sum is 35.

The spelling of 84001684040 in words is "eighty-four billion, one million, six hundred eighty-four thousand, forty".