28675511187397 has 2 divisors, whose sum is σ = 28675511187398. Its totient is φ = 28675511187396.

The previous prime is 28675511187353. The next prime is 28675511187419. The reversal of 28675511187397 is 79378111557682.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 28572937673956 + 102573513441 = 5345366^2 + 320271^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-28675511187397 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (28675511187097) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 14337755593698 + 14337755593699.

It is an arithmetic number, because the mean of its divisors is an integer number (14337755593699).

Almost surely, 2^{28675511187397} is an apocalyptic number.

It is an amenable number.

28675511187397 is a deficient number, since it is larger than the sum of its proper divisors (1).

28675511187397 is an equidigital number, since it uses as much as digits as its factorization.

28675511187397 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 177811200, while the sum is 70.

The spelling of 28675511187397 in words is "twenty-eight trillion, six hundred seventy-five billion, five hundred eleven million, one hundred eighty-seven thousand, three hundred ninety-seven".