2405390401643 has 2 divisors, whose sum is σ = 2405390401644. Its totient is φ = 2405390401642.

The previous prime is 2405390401577. The next prime is 2405390401747. The reversal of 2405390401643 is 3461040935042.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 2405390401643 - 2⁸ = 2405390401387 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 2405390401643.

It is not a weakly prime, because it can be changed into another prime (2405390401243) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1202695200821 + 1202695200822.

It is an arithmetic number, because the mean of its divisors is an integer number (1202695200822).

Almost surely, 2^{2405390401643} is an apocalyptic number.

2405390401643 is a deficient number, since it is larger than the sum of its proper divisors (1).

2405390401643 is an equidigital number, since it uses as much as digits as its factorization.

2405390401643 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 311040, while the sum is 41.

The spelling of 2405390401643 in words is "two trillion, four hundred five billion, three hundred ninety million, four hundred one thousand, six hundred forty-three".