197074662143 has 2 divisors, whose sum is σ = 197074662144. Its totient is φ = 197074662142.

The previous prime is 197074662139. The next prime is 197074662173. The reversal of 197074662143 is 341266470791.

It is a weak prime.

It is an emirp because it is prime and its reverse (341266470791) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 197074662143 - 2² = 197074662139 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 197074662091 and 197074662100.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (197074662173) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 98537331071 + 98537331072.

It is an arithmetic number, because the mean of its divisors is an integer number (98537331072).

Almost surely, 2^197074662143 is an apocalyptic number.

197074662143 is a deficient number, since it is larger than the sum of its proper divisors (1).

197074662143 is an equidigital number, since it uses as much as digits as its factorization.

197074662143 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 1524096, while the sum is 50.

The spelling of 197074662143 in words is "one hundred ninety-seven billion, seventy-four million, six hundred sixty-two thousand, one hundred forty-three".