164727209956 has 9 divisors (see below), whose sum is σ = 288274037961. Its totient is φ = 82363199112.

The previous prime is 164727209939. The next prime is 164727209971. The reversal of 164727209956 is 659902727461.

The square root of 164727209956 is 405866.

It is a perfect power (a square), and thus also a powerful number.

It can be written as a sum of positive squares in only one way, i.e., 141067848100 + 23659361856 = 375590^2 + 153816^2 .

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 164727209956.

It is an unprimeable number.

It is a polite number, since it can be written in 2 ways as a sum of consecutive naturals, for example, 710266 + ... + 913198.

Almost surely, 2^164727209956 is an apocalyptic number.

164727209956 is the 405866-th square number.

It is an amenable number.

164727209956 is a deficient number, since it is larger than the sum of its proper divisors (123546828005).

164727209956 is an frugal number, since it uses more digits than its factorization.

164727209956 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 405870 (or 202935 counting only the distinct ones).

The product of its (nonzero) digits is 11430720, while the sum is 58.

The spelling of 164727209956 in words is "one hundred sixty-four billion, seven hundred twenty-seven million, two hundred nine thousand, nine hundred fifty-six".