408642077443 has 2 divisors, whose sum is σ = 408642077444. Its totient is φ = 408642077442.

The previous prime is 408642077413. The next prime is 408642077449. The reversal of 408642077443 is 344770246804.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 408642077443 - 2²¹ = 408639980291 is a prime.

It is not a weakly prime, because it can be changed into another prime (408642077449) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 204321038721 + 204321038722.

It is an arithmetic number, because the mean of its divisors is an integer number (204321038722).

Almost surely, 2^408642077443 is an apocalyptic number.

408642077443 is a deficient number, since it is larger than the sum of its proper divisors (1).

408642077443 is an equidigital number, since it uses as much as digits as its factorization.

408642077443 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 3612672, while the sum is 49.

The spelling of 408642077443 in words is "four hundred eight billion, six hundred forty-two million, seventy-seven thousand, four hundred forty-three".