2404369661609 has 2 divisors, whose sum is σ = 2404369661610. Its totient is φ = 2404369661608.

The previous prime is 2404369661581. The next prime is 2404369661621. The reversal of 2404369661609 is 9061669634042.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 2137452772009 + 266916889600 = 1462003^2 + 516640^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-2404369661609 is a prime.

It is not a weakly prime, because it can be changed into another prime (2404369661669) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1202184830804 + 1202184830805.

It is an arithmetic number, because the mean of its divisors is an integer number (1202184830805).

Almost surely, 2^{2404369661609} is an apocalyptic number.

It is an amenable number.

2404369661609 is a deficient number, since it is larger than the sum of its proper divisors (1).

2404369661609 is an equidigital number, since it uses as much as digits as its factorization.

2404369661609 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 10077696, while the sum is 56.

The spelling of 2404369661609 in words is "two trillion, four hundred four billion, three hundred sixty-nine million, six hundred sixty-one thousand, six hundred nine".