28341991927 has 2 divisors, whose sum is σ = 28341991928. Its totient is φ = 28341991926.

The previous prime is 28341991919. The next prime is 28341991963. The reversal of 28341991927 is 72919914382.

It is a happy number.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 28341991927 - 2³ = 28341991919 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (28341991127) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 14170995963 + 14170995964.

It is an arithmetic number, because the mean of its divisors is an integer number (14170995964).

Almost surely, 2^28341991927 is an apocalyptic number.

28341991927 is a deficient number, since it is larger than the sum of its proper divisors (1).

28341991927 is an equidigital number, since it uses as much as digits as its factorization.

28341991927 is an evil number, because the sum of its binary digits is even.

The product of its digits is 1959552, while the sum is 55.

The spelling of 28341991927 in words is "twenty-eight billion, three hundred forty-one million, nine hundred ninety-one thousand, nine hundred twenty-seven".