28265941547 has 2 divisors, whose sum is σ = 28265941548. Its totient is φ = 28265941546.

The previous prime is 28265941541. The next prime is 28265941549. The reversal of 28265941547 is 74514956282.

It is a strong prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-28265941547 is a prime.

Together with 28265941549, 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 (28265941541) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 14132970773 + 14132970774.

It is an arithmetic number, because the mean of its divisors is an integer number (14132970774).

Almost surely, 2^28265941547 is an apocalyptic number.

28265941547 is a deficient number, since it is larger than the sum of its proper divisors (1).

28265941547 is an equidigital number, since it uses as much as digits as its factorization.

28265941547 is an evil number, because the sum of its binary digits is even.

The product of its digits is 4838400, while the sum is 53.

The spelling of 28265941547 in words is "twenty-eight billion, two hundred sixty-five million, nine hundred forty-one thousand, five hundred forty-seven".