423436896691 has 2 divisors, whose sum is σ = 423436896692. Its totient is φ = 423436896690.

The previous prime is 423436896637. The next prime is 423436896737. The reversal of 423436896691 is 196698634324.

It is a strong prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-423436896691 is a prime.

It is not a weakly prime, because it can be changed into another prime (423436896791) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 211718448345 + 211718448346.

It is an arithmetic number, because the mean of its divisors is an integer number (211718448346).

Almost surely, 2^423436896691 is an apocalyptic number.

423436896691 is a deficient number, since it is larger than the sum of its proper divisors (1).

423436896691 is an equidigital number, since it uses as much as digits as its factorization.

423436896691 is an evil number, because the sum of its binary digits is even.

The product of its digits is 40310784, while the sum is 61.

The spelling of 423436896691 in words is "four hundred twenty-three billion, four hundred thirty-six million, eight hundred ninety-six thousand, six hundred ninety-one".