160728778244 has 12 divisors (see below), whose sum is σ = 285886433868. Its totient is φ = 79046940000.

The previous prime is 160728778241. The next prime is 160728778291. The reversal of 160728778244 is 442877827061.

It can be written as a sum of positive squares in 2 ways, for example, as 2911681600 + 157817096644 = 53960^2 + 397262^2 .

It is a self number, because there is not a number n which added to its sum of digits gives 160728778244.

It is not an unprimeable number, because it can be changed into a prime (160728778241) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 329362007 + ... + 329362494.

It is an arithmetic number, because the mean of its divisors is an integer number (23823869489).

Almost surely, 2^160728778244 is an apocalyptic number.

It is an amenable number.

160728778244 is a deficient number, since it is larger than the sum of its proper divisors (125157655624).

160728778244 is a wasteful number, since it uses less digits than its factorization.

160728778244 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 658724566 (or 658724564 counting only the distinct ones).

The product of its (nonzero) digits is 8429568, while the sum is 56.

The spelling of 160728778244 in words is "one hundred sixty billion, seven hundred twenty-eight million, seven hundred seventy-eight thousand, two hundred forty-four".