84065580722 has 6 divisors (see below), whose sum is σ = 126098986143. Its totient is φ = 42032585342.

The previous prime is 84065580707. The next prime is 84065580793. The reversal of 84065580722 is 22708556048.

It can be written as a sum of positive squares in only one way, i.e., 42032790361 + 42032790361 = 205019^2 + 205019^2 .

It is an ABA number since it can be written as A⋅B^A, here for A=2, B=205019.

It is a Duffinian number.

It is an unprimeable number.

It is a polite number, since it can be written in 2 ways as a sum of consecutive naturals, for example, 307529 + ... + 512547.

Almost surely, 2^84065580722 is an apocalyptic number.

84065580722 is a deficient number, since it is larger than the sum of its proper divisors (42033405421).

84065580722 is an frugal number, since it uses more digits than its factorization.

84065580722 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 410040 (or 205021 counting only the distinct ones).

The product of its (nonzero) digits is 1075200, while the sum is 47.

The spelling of 84065580722 in words is "eighty-four billion, sixty-five million, five hundred eighty thousand, seven hundred twenty-two".