28325178745247 has 2 divisors, whose sum is σ = 28325178745248. Its totient is φ = 28325178745246.

The previous prime is 28325178745243. The next prime is 28325178745271. The reversal of 28325178745247 is 74254787152382.

It is a happy number.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 28325178745247 - 2² = 28325178745243 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (28325178745243) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 14162589372623 + 14162589372624.

It is an arithmetic number, because the mean of its divisors is an integer number (14162589372624).

Almost surely, 2^{28325178745247} is an apocalyptic number.

28325178745247 is a deficient number, since it is larger than the sum of its proper divisors (1).

28325178745247 is an equidigital number, since it uses as much as digits as its factorization.

28325178745247 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 210739200, while the sum is 65.

The spelling of 28325178745247 in words is "twenty-eight trillion, three hundred twenty-five billion, one hundred seventy-eight million, seven hundred forty-five thousand, two hundred forty-seven".