197741486543 has 2 divisors, whose sum is σ = 197741486544. Its totient is φ = 197741486542.

The previous prime is 197741486539. The next prime is 197741486603. The reversal of 197741486543 is 345684147791.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 197741486543 - 2² = 197741486539 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (197741486143) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 98870743271 + 98870743272.

It is an arithmetic number, because the mean of its divisors is an integer number (98870743272).

Almost surely, 2^197741486543 is an apocalyptic number.

197741486543 is a deficient number, since it is larger than the sum of its proper divisors (1).

197741486543 is an equidigital number, since it uses as much as digits as its factorization.

197741486543 is an evil number, because the sum of its binary digits is even.

The product of its digits is 20321280, while the sum is 59.

The spelling of 197741486543 in words is "one hundred ninety-seven billion, seven hundred forty-one million, four hundred eighty-six thousand, five hundred forty-three".