84081704436 has 18 divisors (see below), whose sum is σ = 212539864082. Its totient is φ = 28027234800.

The previous prime is 84081704419. The next prime is 84081704479. The reversal of 84081704436 is 63440718048.

84081704436 is a `hidden beast` number, since 8 + 40 + 8 + 170 + 4 + 436 = 666.

It can be written as a sum of positive squares in only one way, i.e., 72221187600 + 11860516836 = 268740^2 + 108906^2 .

It is a tau number, because it is divible by the number of its divisors (18).

It is a junction number, because it is equal to n+sod(n) for n = 84081704391 and 84081704400.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 1167801415 + ... + 1167801486.

Almost surely, 2^84081704436 is an apocalyptic number.

It is an amenable number.

84081704436 is an abundant number, since it is smaller than the sum of its proper divisors (128458159646).

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

84081704436 is a wasteful number, since it uses less digits than its factorization.

84081704436 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2335602911 (or 2335602906 counting only the distinct ones).

The product of its (nonzero) digits is 516096, while the sum is 45.

The spelling of 84081704436 in words is "eighty-four billion, eighty-one million, seven hundred four thousand, four hundred thirty-six".