197045304647 has 2 divisors, whose sum is σ = 197045304648. Its totient is φ = 197045304646.

The previous prime is 197045304637. The next prime is 197045304679. The reversal of 197045304647 is 746403540791.

It is a weak prime.

It is an emirp because it is prime and its reverse (746403540791) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 197045304647 - 2²⁶ = 196978195783 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 197045304595 and 197045304604.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (197045304637) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 98522652323 + 98522652324.

It is an arithmetic number, because the mean of its divisors is an integer number (98522652324).

Almost surely, 2^197045304647 is an apocalyptic number.

197045304647 is a deficient number, since it is larger than the sum of its proper divisors (1).

197045304647 is an equidigital number, since it uses as much as digits as its factorization.

197045304647 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 2540160, while the sum is 50.

The spelling of 197045304647 in words is "one hundred ninety-seven billion, forty-five million, three hundred four thousand, six hundred forty-seven".