434542635643 has 2 divisors, whose sum is σ = 434542635644. Its totient is φ = 434542635642.

The previous prime is 434542635623. The next prime is 434542635661. The reversal of 434542635643 is 346536245434.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 434542635643 - 2¹³ = 434542627451 is a prime.

It is not a weakly prime, because it can be changed into another prime (434542635623) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 217271317821 + 217271317822.

It is an arithmetic number, because the mean of its divisors is an integer number (217271317822).

Almost surely, 2^434542635643 is an apocalyptic number.

434542635643 is a deficient number, since it is larger than the sum of its proper divisors (1).

434542635643 is an equidigital number, since it uses as much as digits as its factorization.

434542635643 is an evil number, because the sum of its binary digits is even.

The product of its digits is 12441600, while the sum is 49.

The spelling of 434542635643 in words is "four hundred thirty-four billion, five hundred forty-two million, six hundred thirty-five thousand, six hundred forty-three".