28741025491 has 2 divisors, whose sum is σ = 28741025492. Its totient is φ = 28741025490.

The previous prime is 28741025477. The next prime is 28741025569. The reversal of 28741025491 is 19452014782.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 28741025491 - 2⁷ = 28741025363 is a prime.

It is not a weakly prime, because it can be changed into another prime (28741025591) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 14370512745 + 14370512746.

It is an arithmetic number, because the mean of its divisors is an integer number (14370512746).

Almost surely, 2^28741025491 is an apocalyptic number.

28741025491 is a deficient number, since it is larger than the sum of its proper divisors (1).

28741025491 is an equidigital number, since it uses as much as digits as its factorization.

28741025491 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 161280, while the sum is 43.

The spelling of 28741025491 in words is "twenty-eight billion, seven hundred forty-one million, twenty-five thousand, four hundred ninety-one".