28601571443197 has 2 divisors, whose sum is σ = 28601571443198. Its totient is φ = 28601571443196.

The previous prime is 28601571443171. The next prime is 28601571443209. The reversal of 28601571443197 is 79134417510682.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 25743507325636 + 2858064117561 = 5073806^2 + 1690581^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-28601571443197 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (28601571441197) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 14300785721598 + 14300785721599.

It is an arithmetic number, because the mean of its divisors is an integer number (14300785721599).

It is a 2-persistent number, because it is pandigital, and so is 2⋅28601571443197 = 57203142886394, but 3⋅28601571443197 = 85804714329591 is not.

Almost surely, 2^{28601571443197} is an apocalyptic number.

It is an amenable number.

28601571443197 is a deficient number, since it is larger than the sum of its proper divisors (1).

28601571443197 is an equidigital number, since it uses as much as digits as its factorization.

28601571443197 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 10160640, while the sum is 58.

The spelling of 28601571443197 in words is "twenty-eight trillion, six hundred one billion, five hundred seventy-one million, four hundred forty-three thousand, one hundred ninety-seven".