28158011423 has 2 divisors, whose sum is σ = 28158011424. Its totient is φ = 28158011422.

The previous prime is 28158011411. The next prime is 28158011437. The reversal of 28158011423 is 32411085182.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 28158011423 - 2¹⁶ = 28157945887 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (28158010423) 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, 14079005711 + 14079005712.

It is an arithmetic number, because the mean of its divisors is an integer number (14079005712).

Almost surely, 2^28158011423 is an apocalyptic number.

28158011423 is a deficient number, since it is larger than the sum of its proper divisors (1).

28158011423 is an equidigital number, since it uses as much as digits as its factorization.

28158011423 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 15360, while the sum is 35.

The spelling of 28158011423 in words is "twenty-eight billion, one hundred fifty-eight million, eleven thousand, four hundred twenty-three".