204820827511 has 2 divisors, whose sum is σ = 204820827512. Its totient is φ = 204820827510.

The previous prime is 204820827413. The next prime is 204820827587. The reversal of 204820827511 is 115728028402.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 204820827511 - 2³¹ = 202673343863 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (204890827511) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 102410413755 + 102410413756.

It is an arithmetic number, because the mean of its divisors is an integer number (102410413756).

Almost surely, 2^204820827511 is an apocalyptic number.

204820827511 is a deficient number, since it is larger than the sum of its proper divisors (1).

204820827511 is an equidigital number, since it uses as much as digits as its factorization.

204820827511 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 71680, while the sum is 40.

The spelling of 204820827511 in words is "two hundred four billion, eight hundred twenty million, eight hundred twenty-seven thousand, five hundred eleven".