197466887798 has 4 divisors (see below), whose sum is σ = 296200331700. Its totient is φ = 98733443898.

The previous prime is 197466887791. The next prime is 197466887851. The reversal of 197466887798 is 897788664791.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 897788664791 = 19 ⋅47252034989.

It is a Curzon number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (197466887791) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 49366721948 + ... + 49366721951.

It is an arithmetic number, because the mean of its divisors is an integer number (74050082925).

Almost surely, 2^197466887798 is an apocalyptic number.

197466887798 is a deficient number, since it is larger than the sum of its proper divisors (98733443902).

197466887798 is an equidigital number, since it uses as much as digits as its factorization.

197466887798 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 98733443901.

The product of its digits is 2048385024, while the sum is 80.

The spelling of 197466887798 in words is "one hundred ninety-seven billion, four hundred sixty-six million, eight hundred eighty-seven thousand, seven hundred ninety-eight".