4408688561 has 2 divisors, whose sum is σ = 4408688562. Its totient is φ = 4408688560.

The previous prime is 4408688533. The next prime is 4408688567. The reversal of 4408688561 is 1658868044.

4408688561 is digitally balanced in base 3, 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., 4371722161 + 36966400 = 66119^2 + 6080^2 .

It is a cyclic number.

It is not a de Polignac number, because 4408688561 - 2⁶ = 4408688497 is a prime.

It is not a weakly prime, because it can be changed into another prime (4408688567) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 2204344280 + 2204344281.

It is an arithmetic number, because the mean of its divisors is an integer number (2204344281).

Almost surely, 2^4408688561 is an apocalyptic number.

It is an amenable number.

4408688561 is a deficient number, since it is larger than the sum of its proper divisors (1).

4408688561 is an equidigital number, since it uses as much as digits as its factorization.

4408688561 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 1474560, while the sum is 50.

The square root of 4408688561 is about 66397.9560001661. The cubic root of 4408688561 is about 1639.7204263915.

The spelling of 4408688561 in words is "four billion, four hundred eight million, six hundred eighty-eight thousand, five hundred sixty-one".