197074663678 has 4 divisors (see below), whose sum is σ = 295611995520. Its totient is φ = 98537331838.

The previous prime is 197074663627. The next prime is 197074663691. The reversal of 197074663678 is 876366470791.

It is a semiprime because it is the product of two primes.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 49268665918 + ... + 49268665921.

It is an arithmetic number, because the mean of its divisors is an integer number (73902998880).

Almost surely, 2^197074663678 is an apocalyptic number.

197074663678 is a deficient number, since it is larger than the sum of its proper divisors (98537331842).

197074663678 is an equidigital number, since it uses as much as digits as its factorization.

197074663678 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 98537331841.

The product of its (nonzero) digits is 64012032, while the sum is 64.

The spelling of 197074663678 in words is "one hundred ninety-seven billion, seventy-four million, six hundred sixty-three thousand, six hundred seventy-eight".