464549633378197 has 2 divisors, whose sum is σ = 464549633378198. Its totient is φ = 464549633378196.

The previous prime is 464549633378183. The next prime is 464549633378221. The reversal of 464549633378197 is 791873336945464.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 352071709253476 + 112477924124721 = 18763574^2 + 10605561^2 .

It is a cyclic number.

It is not a de Polignac number, because 464549633378197 - 2¹¹ = 464549633376149 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (464549633375197) 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, 232274816689098 + 232274816689099.

It is an arithmetic number, because the mean of its divisors is an integer number (232274816689099).

Almost surely, 2^{464549633378197} is an apocalyptic number.

It is an amenable number.

464549633378197 is a deficient number, since it is larger than the sum of its proper divisors (1).

464549633378197 is an equidigital number, since it uses as much as digits as its factorization.

464549633378197 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 9876142080, while the sum is 79.

The spelling of 464549633378197 in words is "four hundred sixty-four trillion, five hundred forty-nine billion, six hundred thirty-three million, three hundred seventy-eight thousand, one hundred ninety-seven".