2005204065331 has 2 divisors, whose sum is σ = 2005204065332. Its totient is φ = 2005204065330.

The previous prime is 2005204065299. The next prime is 2005204065367. The reversal of 2005204065331 is 1335604025002.

It is a happy number.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 2005204065331 - 2⁵ = 2005204065299 is a prime.

It is a super-2 number, since 2×2005204065331² (a number of 25 digits) contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 2005204065293 and 2005204065302.

It is not a weakly prime, because it can be changed into another prime (2005204060331) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1002602032665 + 1002602032666.

It is an arithmetic number, because the mean of its divisors is an integer number (1002602032666).

Almost surely, 2^{2005204065331} is an apocalyptic number.

2005204065331 is a deficient number, since it is larger than the sum of its proper divisors (1).

2005204065331 is an equidigital number, since it uses as much as digits as its factorization.

2005204065331 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 21600, while the sum is 31.

The spelling of 2005204065331 in words is "two trillion, five billion, two hundred four million, sixty-five thousand, three hundred thirty-one".