169205889968 has 20 divisors (see below), whose sum is σ = 327843101520. Its totient is φ = 84601218624.

The previous prime is 169205889949. The next prime is 169205889991. The reversal of 169205889968 is 869988502961.

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, 1133546 + ... + 1274102.

It is an arithmetic number, because the mean of its divisors is an integer number (16392155076).

Almost surely, 2^169205889968 is an apocalyptic number.

It is an amenable number.

169205889968 is a deficient number, since it is larger than the sum of its proper divisors (158637211552).

169205889968 is a wasteful number, since it uses less digits than its factorization.

169205889968 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 215804 (or 215798 counting only the distinct ones).

The product of its (nonzero) digits is 134369280, while the sum is 71.

The spelling of 169205889968 in words is "one hundred sixty-nine billion, two hundred five million, eight hundred eighty-nine thousand, nine hundred sixty-eight".