84631813648 has 10 divisors (see below), whose sum is σ = 163974138974. Its totient is φ = 42315906816.

The previous prime is 84631813631. The next prime is 84631813681.

84631813648 is nontrivially palindromic in base 10.

It can be written as a sum of positive squares in only one way, i.e., 75332683024 + 9299130624 = 274468^2 + 96432^2 .

It is a junction number, because it is equal to n+sod(n) for n = 84631813595 and 84631813604.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 2644744161 + ... + 2644744192.

Almost surely, 2^84631813648 is an apocalyptic number.

It is an amenable number.

84631813648 is a deficient number, since it is larger than the sum of its proper divisors (79342325326).

84631813648 is a wasteful number, since it uses less digits than its factorization.

84631813648 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5289488361 (or 5289488355 counting only the distinct ones).

The product of its digits is 2654208, while the sum is 52.

The spelling of 84631813648 in words is "eighty-four billion, six hundred thirty-one million, eight hundred thirteen thousand, six hundred forty-eight".