28363351691 has 2 divisors, whose sum is σ = 28363351692. Its totient is φ = 28363351690.

The previous prime is 28363351663. The next prime is 28363351693. The reversal of 28363351691 is 19615336382.

It is a strong prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-28363351691 is a prime.

Together with 28363351693, it forms a pair of twin primes.

It is a Chen prime.

It is not a weakly prime, because it can be changed into another prime (28363351693) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 14181675845 + 14181675846.

It is an arithmetic number, because the mean of its divisors is an integer number (14181675846).

Almost surely, 2^28363351691 is an apocalyptic number.

28363351691 is a deficient number, since it is larger than the sum of its proper divisors (1).

28363351691 is an equidigital number, since it uses as much as digits as its factorization.

28363351691 is an evil number, because the sum of its binary digits is even.

The product of its digits is 699840, while the sum is 47.

The spelling of 28363351691 in words is "twenty-eight billion, three hundred sixty-three million, three hundred fifty-one thousand, six hundred ninety-one".