84661044481 has 16 divisors (see below), whose sum is σ = 92495909968. Its totient is φ = 77021798400.

The previous prime is 84661044451. The next prime is 84661044509. The reversal of 84661044481 is 18444016648.

It can be written as a sum of positive squares in 8 ways, for example, as 6364050625 + 78296993856 = 79775^2 + 279816^2 .

It is a cyclic number.

It is not a de Polignac number, because 84661044481 - 2¹⁷ = 84660913409 is a prime.

It is a super-2 number, since 2×84661044481² (a number of 23 digits) contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (84661044401) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 164611 + ... + 443191.

It is an arithmetic number, because the mean of its divisors is an integer number (5780994373).

Almost surely, 2^84661044481 is an apocalyptic number.

It is an amenable number.

84661044481 is a deficient number, since it is larger than the sum of its proper divisors (7834865487).

84661044481 is a wasteful number, since it uses less digits than its factorization.

84661044481 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 278932.

The product of its (nonzero) digits is 589824, while the sum is 46.

The spelling of 84661044481 in words is "eighty-four billion, six hundred sixty-one million, forty-four thousand, four hundred eighty-one".