197466887797 has 4 divisors (see below), whose sum is σ = 198352389760. Its totient is φ = 196581385836.

The previous prime is 197466887791. The next prime is 197466887851. The reversal of 197466887797 is 797788664791.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 197466887797 - 2³ = 197466887789 is a prime.

It is a Duffinian 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 in 3 ways as a sum of consecutive naturals, for example, 442750647 + ... + 442751092.

It is an arithmetic number, because the mean of its divisors is an integer number (49588097440).

Almost surely, 2^197466887797 is an apocalyptic number.

It is an amenable number.

197466887797 is a deficient number, since it is larger than the sum of its proper divisors (885501963).

197466887797 is an equidigital number, since it uses as much as digits as its factorization.

197466887797 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 885501962.

The product of its digits is 1792336896, while the sum is 79.

The spelling of 197466887797 in words is "one hundred ninety-seven billion, four hundred sixty-six million, eight hundred eighty-seven thousand, seven hundred ninety-seven".