28251157385791 has 2 divisors, whose sum is σ = 28251157385792. Its totient is φ = 28251157385790.

The previous prime is 28251157385743. The next prime is 28251157385837. The reversal of 28251157385791 is 19758375115282.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 28251157385791 - 2⁹ = 28251157385279 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (28251157383791) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 14125578692895 + 14125578692896.

It is an arithmetic number, because the mean of its divisors is an integer number (14125578692896).

Almost surely, 2^{28251157385791} is an apocalyptic number.

28251157385791 is a deficient number, since it is larger than the sum of its proper divisors (1).

28251157385791 is an equidigital number, since it uses as much as digits as its factorization.

28251157385791 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 42336000, while the sum is 64.

The spelling of 28251157385791 in words is "twenty-eight trillion, two hundred fifty-one billion, one hundred fifty-seven million, three hundred eighty-five thousand, seven hundred ninety-one".