197936306817 has 8 divisors (see below), whose sum is σ = 264510822624. Its totient is φ = 131659664448.

The previous prime is 197936306807. The next prime is 197936306833. The reversal of 197936306817 is 718603639791.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 197936306817 - 2⁶ = 197936306753 is a prime.

It is not an unprimeable number, because it can be changed into a prime (197936306807) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 74466808 + ... + 74469465.

It is an arithmetic number, because the mean of its divisors is an integer number (33063852828).

Almost surely, 2^197936306817 is an apocalyptic number.

It is an amenable number.

197936306817 is a deficient number, since it is larger than the sum of its proper divisors (66574515807).

197936306817 is a wasteful number, since it uses less digits than its factorization.

197936306817 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 148936719.

The product of its (nonzero) digits is 10287648, while the sum is 60.

The spelling of 197936306817 in words is "one hundred ninety-seven billion, nine hundred thirty-six million, three hundred six thousand, eight hundred seventeen".