197655857071 has 2 divisors, whose sum is σ = 197655857072. Its totient is φ = 197655857070.

The previous prime is 197655857053. The next prime is 197655857099. The reversal of 197655857071 is 170758556791.

197655857071 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 197655857071 - 2⁵ = 197655857039 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (197655857041) 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, 98827928535 + 98827928536.

It is an arithmetic number, because the mean of its divisors is an integer number (98827928536).

Almost surely, 2^197655857071 is an apocalyptic number.

197655857071 is a deficient number, since it is larger than the sum of its proper divisors (1).

197655857071 is an equidigital number, since it uses as much as digits as its factorization.

197655857071 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 18522000, while the sum is 61.

The spelling of 197655857071 in words is "one hundred ninety-seven billion, six hundred fifty-five million, eight hundred fifty-seven thousand, seventy-one".