84805986445 has 4 divisors (see below), whose sum is σ = 101767183740. Its totient is φ = 67844789152.

The previous prime is 84805986439. The next prime is 84805986479. The reversal of 84805986445 is 54468950848.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 18145975849 + 66660010596 = 134707^2 + 258186^2 .

It is a cyclic number.

It is not a de Polignac number, because 84805986445 - 2³ = 84805986437 is a prime.

It is a congruent number.

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, 8480598640 + ... + 8480598649.

It is an arithmetic number, because the mean of its divisors is an integer number (25441795935).

Almost surely, 2^84805986445 is an apocalyptic number.

It is an amenable number.

84805986445 is a deficient number, since it is larger than the sum of its proper divisors (16961197295).

84805986445 is a wasteful number, since it uses less digits than its factorization.

84805986445 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 16961197294.

The product of its (nonzero) digits is 44236800, while the sum is 61.

The spelling of 84805986445 in words is "eighty-four billion, eight hundred five million, nine hundred eighty-six thousand, four hundred forty-five".