10208404561 has 2 divisors, whose sum is σ = 10208404562. Its totient is φ = 10208404560.

The previous prime is 10208404553. The next prime is 10208404567. The reversal of 10208404561 is 16540480201.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 10075140625 + 133263936 = 100375^2 + 11544^2 .

It is a cyclic number.

It is not a de Polignac number, because 10208404561 - 2³ = 10208404553 is a prime.

It is not a weakly prime, because it can be changed into another prime (10208404567) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 5104202280 + 5104202281.

It is an arithmetic number, because the mean of its divisors is an integer number (5104202281).

Almost surely, 2^10208404561 is an apocalyptic number.

It is an amenable number.

10208404561 is a deficient number, since it is larger than the sum of its proper divisors (1).

10208404561 is an equidigital number, since it uses as much as digits as its factorization.

10208404561 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 7680, while the sum is 31.

Adding to 10208404561 its reverse (16540480201), we get a palindrome (26748884762).

The spelling of 10208404561 in words is "ten billion, two hundred eight million, four hundred four thousand, five hundred sixty-one".