160821511568 has 10 divisors (see below), whose sum is σ = 311591678694. Its totient is φ = 80410755776.

The previous prime is 160821511541. The next prime is 160821511673. The reversal of 160821511568 is 865115128061.

It can be written as a sum of positive squares in only one way, i.e., 96281125264 + 64540386304 = 310292^2 + 254048^2 .

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 5025672221 + ... + 5025672252.

Almost surely, 2^160821511568 is an apocalyptic number.

It is an amenable number.

160821511568 is a deficient number, since it is larger than the sum of its proper divisors (150770167126).

160821511568 is a wasteful number, since it uses less digits than its factorization.

160821511568 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 10051344481 (or 10051344475 counting only the distinct ones).

The product of its (nonzero) digits is 115200, while the sum is 44.

The spelling of 160821511568 in words is "one hundred sixty billion, eight hundred twenty-one million, five hundred eleven thousand, five hundred sixty-eight".