28161108527 has 2 divisors, whose sum is σ = 28161108528. Its totient is φ = 28161108526.

The previous prime is 28161108523. The next prime is 28161108539. The reversal of 28161108527 is 72580116182.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 28161108527 - 2² = 28161108523 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (28161108523) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 14080554263 + 14080554264.

It is an arithmetic number, because the mean of its divisors is an integer number (14080554264).

Almost surely, 2^28161108527 is an apocalyptic number.

28161108527 is a deficient number, since it is larger than the sum of its proper divisors (1).

28161108527 is an equidigital number, since it uses as much as digits as its factorization.

28161108527 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 53760, while the sum is 41.

The spelling of 28161108527 in words is "twenty-eight billion, one hundred sixty-one million, one hundred eight thousand, five hundred twenty-seven".