28464640157197 has 2 divisors, whose sum is σ = 28464640157198. Its totient is φ = 28464640157196.

The previous prime is 28464640157131. The next prime is 28464640157201. The reversal of 28464640157197 is 79175104646482.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 26329151865636 + 2135488291561 = 5131194^2 + 1461331^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-28464640157197 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (28464640157497) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 14232320078598 + 14232320078599.

It is an arithmetic number, because the mean of its divisors is an integer number (14232320078599).

Almost surely, 2^{28464640157197} is an apocalyptic number.

It is an amenable number.

28464640157197 is a deficient number, since it is larger than the sum of its proper divisors (1).

28464640157197 is an equidigital number, since it uses as much as digits as its factorization.

28464640157197 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 81285120, while the sum is 64.

The spelling of 28464640157197 in words is "twenty-eight trillion, four hundred sixty-four billion, six hundred forty million, one hundred fifty-seven thousand, one hundred ninety-seven".