7985162144 has 24 divisors (see below), whose sum is σ = 15728976900. Its totient is φ = 3990501376.

The previous prime is 7985162137. The next prime is 7985162177. The reversal of 7985162144 is 4412615897.

It is a happy number.

It can be written as a sum of positive squares in 2 ways, for example, as 7816681744 + 168480400 = 88412^2 + 12980^2 .

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, 1649 + ... + 126384.

Almost surely, 2^7985162144 is an apocalyptic number.

It is an amenable number.

7985162144 is a deficient number, since it is larger than the sum of its proper divisors (7743814756).

7985162144 is a wasteful number, since it uses less digits than its factorization.

7985162144 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 129992 (or 129984 counting only the distinct ones).

The product of its digits is 483840, while the sum is 47.

The square root of 7985162144 is about 89359.7344669287. The cubic root of 7985162144 is about 1998.7627467600.

The spelling of 7985162144 in words is "seven billion, nine hundred eighty-five million, one hundred sixty-two thousand, one hundred forty-four".