164309364728 has 32 divisors (see below), whose sum is σ = 318929520000. Its totient is φ = 79276682880.

The previous prime is 164309364679. The next prime is 164309364743. The reversal of 164309364728 is 827463903461.

It is a self number, because there is not a number n which added to its sum of digits gives 164309364728.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 862643 + ... + 1035746.

It is an arithmetic number, because the mean of its divisors is an integer number (9966547500).

Almost surely, 2^164309364728 is an apocalyptic number.

It is an amenable number.

164309364728 is a deficient number, since it is larger than the sum of its proper divisors (154620155272).

164309364728 is a wasteful number, since it uses less digits than its factorization.

164309364728 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1898775 (or 1898771 counting only the distinct ones).

The product of its (nonzero) digits is 5225472, while the sum is 53.

The spelling of 164309364728 in words is "one hundred sixty-four billion, three hundred nine million, three hundred sixty-four thousand, seven hundred twenty-eight".