2404431330661 has 2 divisors, whose sum is σ = 2404431330662. Its totient is φ = 2404431330660.

The previous prime is 2404431330647. The next prime is 2404431330673. The reversal of 2404431330661 is 1660331344042.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 2403411486436 + 1019844225 = 1550294^2 + 31935^2 .

It is a cyclic number.

It is not a de Polignac number, because 2404431330661 - 2¹⁹ = 2404430806373 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 2404431330661.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (2404431330761) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1202215665330 + 1202215665331.

It is an arithmetic number, because the mean of its divisors is an integer number (1202215665331).

Almost surely, 2^{2404431330661} is an apocalyptic number.

It is an amenable number.

2404431330661 is a deficient number, since it is larger than the sum of its proper divisors (1).

2404431330661 is an equidigital number, since it uses as much as digits as its factorization.

2404431330661 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 124416, while the sum is 37.

The spelling of 2404431330661 in words is "two trillion, four hundred four billion, four hundred thirty-one million, three hundred thirty thousand, six hundred sixty-one".