28188159451 has 2 divisors, whose sum is σ = 28188159452. Its totient is φ = 28188159450.

The previous prime is 28188159449. The next prime is 28188159509. The reversal of 28188159451 is 15495188182.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 28188159451 - 2¹ = 28188159449 is a prime.

Together with 28188159449, it forms a pair of twin primes.

It is not a weakly prime, because it can be changed into another prime (28188159401) 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, 14094079725 + 14094079726.

It is an arithmetic number, because the mean of its divisors is an integer number (14094079726).

Almost surely, 2^28188159451 is an apocalyptic number.

28188159451 is a deficient number, since it is larger than the sum of its proper divisors (1).

28188159451 is an equidigital number, since it uses as much as digits as its factorization.

28188159451 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 921600, while the sum is 52.

The spelling of 28188159451 in words is "twenty-eight billion, one hundred eighty-eight million, one hundred fifty-nine thousand, four hundred fifty-one".