816016144 has 10 divisors (see below), whose sum is σ = 1581031310. Its totient is φ = 408008064.

The previous prime is 816016139. The next prime is 816016151. The reversal of 816016144 is 441610618.

It can be written as a sum of positive squares in only one way, i.e., 563587600 + 252428544 = 23740^2 + 15888^2 .

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 25500489 + ... + 25500520.

It is an arithmetic number, because the mean of its divisors is an integer number (158103131).

Almost surely, 2^816016144 is an apocalyptic number.

It is an amenable number.

816016144 is a deficient number, since it is larger than the sum of its proper divisors (765015166).

816016144 is a wasteful number, since it uses less digits than its factorization.

816016144 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 51001017 (or 51001011 counting only the distinct ones).

The product of its (nonzero) digits is 4608, while the sum is 31.

The square root of 816016144 is about 28565.9962892947. The cubic root of 816016144 is about 934.4719082182.

The spelling of 816016144 in words is "eight hundred sixteen million, sixteen thousand, one hundred forty-four".