28531270379 has 2 divisors, whose sum is σ = 28531270380. Its totient is φ = 28531270378.

The previous prime is 28531270331. The next prime is 28531270403. The reversal of 28531270379 is 97307213582.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 28531270379 - 2²⁰ = 28530221803 is a prime.

It is not a weakly prime, because it can be changed into another prime (28531270679) 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, 14265635189 + 14265635190.

It is an arithmetic number, because the mean of its divisors is an integer number (14265635190).

Almost surely, 2^28531270379 is an apocalyptic number.

28531270379 is a deficient number, since it is larger than the sum of its proper divisors (1).

28531270379 is an equidigital number, since it uses as much as digits as its factorization.

28531270379 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 635040, while the sum is 47.

The spelling of 28531270379 in words is "twenty-eight billion, five hundred thirty-one million, two hundred seventy thousand, three hundred seventy-nine".