8445981716 has 6 divisors (see below), whose sum is σ = 14780468010. Its totient is φ = 4222990856.

The previous prime is 8445981703. The next prime is 8445981787. The reversal of 8445981716 is 6171895448.

It can be written as a sum of positive squares in only one way, i.e., 5950579600 + 2495402116 = 77140^2 + 49954^2 .

It is a congruent number.

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, 1055747711 + ... + 1055747718.

It is an arithmetic number, because the mean of its divisors is an integer number (2463411335).

Almost surely, 2^8445981716 is an apocalyptic number.

It is an amenable number.

8445981716 is a deficient number, since it is larger than the sum of its proper divisors (6334486294).

8445981716 is a wasteful number, since it uses less digits than its factorization.

8445981716 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2111495433 (or 2111495431 counting only the distinct ones).

The product of its digits is 1935360, while the sum is 53.

The square root of 8445981716 is about 91902.0223716540. The cubic root of 8445981716 is about 2036.4951445680.

The spelling of 8445981716 in words is "eight billion, four hundred forty-five million, nine hundred eighty-one thousand, seven hundred sixteen".