229993656791 has 2 divisors, whose sum is σ = 229993656792. Its totient is φ = 229993656790.

The previous prime is 229993656743. The next prime is 229993656793. The reversal of 229993656791 is 197656399922.

It is a strong prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-229993656791 is a prime.

Together with 229993656793, it forms a pair of twin primes.

It is a Chen prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (229993656793) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 114996828395 + 114996828396.

It is an arithmetic number, because the mean of its divisors is an integer number (114996828396).

Almost surely, 2^229993656791 is an apocalyptic number.

229993656791 is a deficient number, since it is larger than the sum of its proper divisors (1).

229993656791 is an equidigital number, since it uses as much as digits as its factorization.

229993656791 is an evil number, because the sum of its binary digits is even.

The product of its digits is 99202320, while the sum is 68.

The spelling of 229993656791 in words is "two hundred twenty-nine billion, nine hundred ninety-three million, six hundred fifty-six thousand, seven hundred ninety-one".