84509196644 has 12 divisors (see below), whose sum is σ = 149917000044. Its totient is φ = 41675768064.

The previous prime is 84509196637. The next prime is 84509196649. The reversal of 84509196644 is 44669190548.

It can be written as a sum of positive squares in 2 ways, for example, as 24542982244 + 59966214400 = 156662^2 + 244880^2 .

It is a self number, because there is not a number n which added to its sum of digits gives 84509196644.

It is not an unprimeable number, because it can be changed into a prime (84509196649) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 144707237 + ... + 144707820.

It is an arithmetic number, because the mean of its divisors is an integer number (12493083337).

Almost surely, 2^84509196644 is an apocalyptic number.

It is an amenable number.

84509196644 is a deficient number, since it is larger than the sum of its proper divisors (65407803400).

84509196644 is a wasteful number, since it uses less digits than its factorization.

84509196644 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 289415134 (or 289415132 counting only the distinct ones).

The product of its (nonzero) digits is 7464960, while the sum is 56.

The spelling of 84509196644 in words is "eighty-four billion, five hundred nine million, one hundred ninety-six thousand, six hundred forty-four".