20084105221529 has 2 divisors, whose sum is σ = 20084105221530. Its totient is φ = 20084105221528.

The previous prime is 20084105221517. The next prime is 20084105221589. The reversal of 20084105221529 is 92512250148002.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 15874845705625 + 4209259515904 = 3984325^2 + 2051648^2 .

It is a cyclic number.

It is not a de Polignac number, because 20084105221529 - 2²⁸ = 20083836786073 is a prime.

It is not a weakly prime, because it can be changed into another prime (20084105221589) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 10042052610764 + 10042052610765.

It is an arithmetic number, because the mean of its divisors is an integer number (10042052610765).

Almost surely, 2^{20084105221529} is an apocalyptic number.

It is an amenable number.

20084105221529 is a deficient number, since it is larger than the sum of its proper divisors (1).

20084105221529 is an equidigital number, since it uses as much as digits as its factorization.

20084105221529 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 115200, while the sum is 41.

The spelling of 20084105221529 in words is "twenty trillion, eighty-four billion, one hundred five million, two hundred twenty-one thousand, five hundred twenty-nine".