1771164384201 has 27 divisors (see below), whose sum is σ = 2566198394253. Its totient is φ = 1177164326520.

The previous prime is 1771164384167. The next prime is 1771164384229. The reversal of 1771164384201 is 1024834611771.

The square root of 1771164384201 is 1330851.

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

1771164384201 is a `hidden beast` number, since 1 + 7 + 7 + 1 + 1 + 6 + 438 + 4 + 201 = 666.

It is a de Polignac number, because none of the positive numbers 2^k-1771164384201 is a prime.

It is a Curzon number.

It is not an unprimeable number, because it can be changed into a prime (1771164384251) by changing a digit.

It is a polite number, since it can be written in 26 ways as a sum of consecutive naturals, for example, 2183926086 + ... + 2183926896.

Almost surely, 2^{1771164384201} is an apocalyptic number.

1771164384201 is the 1330851-st square number.

1771164384201 is the 665426-th centered octagonal number.

It is an amenable number.

1771164384201 is a deficient number, since it is larger than the sum of its proper divisors (795034010052).

1771164384201 is an frugal number, since it uses more digits than its factorization.

1771164384201 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2722 (or 1361 counting only the distinct ones).

The product of its (nonzero) digits is 225792, while the sum is 45.

Adding to 1771164384201 its reverse (1024834611771), we get a palindrome (2795998995972).

The spelling of 1771164384201 in words is "one trillion, seven hundred seventy-one billion, one hundred sixty-four million, three hundred eighty-four thousand, two hundred one".