197334203421 has 16 divisors (see below), whose sum is σ = 268509867840. Its totient is φ = 128865360000.

The previous prime is 197334203399. The next prime is 197334203447. The reversal of 197334203421 is 124302433791.

It is not a de Polignac number, because 197334203421 - 2¹⁵ = 197334170653 is a prime.

It is a Curzon number.

It is a self number, because there is not a number n which added to its sum of digits gives 197334203421.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (197334203461) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 904080 + ... + 1100921.

It is an arithmetic number, because the mean of its divisors is an integer number (16781866740).

Almost surely, 2^197334203421 is an apocalyptic number.

It is an amenable number.

197334203421 is a deficient number, since it is larger than the sum of its proper divisors (71175664419).

197334203421 is a wasteful number, since it uses less digits than its factorization.

197334203421 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2005676.

The product of its (nonzero) digits is 108864, while the sum is 39.

The spelling of 197334203421 in words is "one hundred ninety-seven billion, three hundred thirty-four million, two hundred three thousand, four hundred twenty-one".