16169253252201 has 135 divisors (see below), whose sum is σ = 28477226506311. Its totient is φ = 9116382836736.

The previous prime is 16169253252151. The next prime is 16169253252277. The reversal of 16169253252201 is 10225235296161.

The square root of 16169253252201 is 4021101.

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

16169253252201 is a `hidden beast` number, since 1 + 6 + 1 + 6 + 92 + 5 + 32 + 522 + 0 + 1 = 666.

16169253252201 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It can be written as a sum of positive squares in only one way, i.e., 6325974492201 + 9843278760000 = 2515149^2 + 3137400^2 .

It is a de Polignac number, because none of the positive numbers 2^k-16169253252201 is a prime.

It is a super-2 number, since 2×16169253252201² (a number of 27 digits) contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (16169253252001) by changing a digit.

It is a polite number, since it can be written in 134 ways as a sum of consecutive naturals, for example, 21026336745 + ... + 21026337513.

Almost surely, 2^{16169253252201} is an apocalyptic number.

16169253252201 is the 4021101-st square number.

16169253252201 is the 2010551-st centered octagonal number.

It is an amenable number.

16169253252201 is a deficient number, since it is larger than the sum of its proper divisors (12307973254110).

16169253252201 is an frugal number, since it uses more digits than its factorization.

16169253252201 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1730 (or 862 counting only the distinct ones).

The product of its (nonzero) digits is 388800, while the sum is 45.

The spelling of 16169253252201 in words is "sixteen trillion, one hundred sixty-nine billion, two hundred fifty-three million, two hundred fifty-two thousand, two hundred one".