28755301691 has 2 divisors, whose sum is σ = 28755301692. Its totient is φ = 28755301690.

The previous prime is 28755301621. The next prime is 28755301693. The reversal of 28755301691 is 19610355782.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 28755301691 - 2¹⁰ = 28755300667 is a prime.

It is a Sophie Germain prime.

Together with 28755301693, 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 (28755301693) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 14377650845 + 14377650846.

It is an arithmetic number, because the mean of its divisors is an integer number (14377650846).

Almost surely, 2^28755301691 is an apocalyptic number.

28755301691 is a deficient number, since it is larger than the sum of its proper divisors (1).

28755301691 is an equidigital number, since it uses as much as digits as its factorization.

28755301691 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 453600, while the sum is 47.

The spelling of 28755301691 in words is "twenty-eight billion, seven hundred fifty-five million, three hundred one thousand, six hundred ninety-one".