3206359378161 has 15 divisors (see below), whose sum is σ = 4789770799561. Its totient is φ = 2137562174988.

The previous prime is 3206359378153. The next prime is 3206359378207. The reversal of 3206359378161 is 1618739536023.

The square root of 3206359378161 is 1790631.

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

3206359378161 is a `hidden beast` number, since 3 + 2 + 0 + 63 + 59 + 378 + 161 = 666.

It is not a de Polignac number, because 3206359378161 - 2³ = 3206359378153 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 3206359378098 and 3206359378107.

It is not an unprimeable number, because it can be changed into a prime (3206359378141) by changing a digit.

It is a polite number, since it can be written in 14 ways as a sum of consecutive naturals, for example, 16016200 + ... + 16215158.

Almost surely, 2^{3206359378161} is an apocalyptic number.

3206359378161 is the 1790631-st square number.

3206359378161 is the 895316-th centered octagonal number.

It is an amenable number.

3206359378161 is a deficient number, since it is larger than the sum of its proper divisors (1583411421400).

3206359378161 is an frugal number, since it uses more digits than its factorization.

3206359378161 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 397930 (or 198962 counting only the distinct ones).

The product of its (nonzero) digits is 4898880, while the sum is 54.

The spelling of 3206359378161 in words is "three trillion, two hundred six billion, three hundred fifty-nine million, three hundred seventy-eight thousand, one hundred sixty-one".