197874313075487 has 2 divisors, whose sum is σ = 197874313075488. Its totient is φ = 197874313075486.

The previous prime is 197874313075433. The next prime is 197874313075489. The reversal of 197874313075487 is 784570313478791.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 197874313075487 - 2¹⁰ = 197874313074463 is a prime.

Together with 197874313075489, it forms a pair of twin primes.

It is a Chen prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (197874313075489) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 98937156537743 + 98937156537744.

It is an arithmetic number, because the mean of its divisors is an integer number (98937156537744).

Almost surely, 2^{197874313075487} is an apocalyptic number.

197874313075487 is a deficient number, since it is larger than the sum of its proper divisors (1).

197874313075487 is an equidigital number, since it uses as much as digits as its factorization.

197874313075487 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 995742720, while the sum is 74.

The spelling of 197874313075487 in words is "one hundred ninety-seven trillion, eight hundred seventy-four billion, three hundred thirteen million, seventy-five thousand, four hundred eighty-seven".