285668552172 has 18 divisors (see below), whose sum is σ = 666564275244. Its totient is φ = 95222233560.

The previous prime is 285668552137. The next prime is 285668552209. The reversal of 285668552172 is 271255866582.

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 in 5 ways as a sum of consecutive naturals, for example, 1774347 + ... + 1928637.

Almost surely, 2^285668552172 is an apocalyptic number.

It is an amenable number.

285668552172 is an abundant number, since it is smaller than the sum of its proper divisors (380895723072).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

285668552172 is an frugal number, since it uses more digits than its factorization.

285668552172 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 308589 (or 154296 counting only the distinct ones).

The product of its digits is 16128000, while the sum is 57.

The spelling of 285668552172 in words is "two hundred eighty-five billion, six hundred sixty-eight million, five hundred fifty-two thousand, one hundred seventy-two".