204886280477 has 2 divisors, whose sum is σ = 204886280478. Its totient is φ = 204886280476.

The previous prime is 204886280441. The next prime is 204886280509. The reversal of 204886280477 is 774082688402.

204886280477 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 166024466521 + 38861813956 = 407461^2 + 197134^2 .

It is a cyclic number.

It is not a de Polignac number, because 204886280477 - 2⁶ = 204886280413 is a prime.

It is a super-2 number, since 2×204886280477² (a number of 23 digits) contains 22 as substring.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (204886280377) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 102443140238 + 102443140239.

It is an arithmetic number, because the mean of its divisors is an integer number (102443140239).

Almost surely, 2^204886280477 is an apocalyptic number.

It is an amenable number.

204886280477 is a deficient number, since it is larger than the sum of its proper divisors (1).

204886280477 is an equidigital number, since it uses as much as digits as its factorization.

204886280477 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 9633792, while the sum is 56.

The spelling of 204886280477 in words is "two hundred four billion, eight hundred eighty-six million, two hundred eighty thousand, four hundred seventy-seven".