197421637814896 has 20 divisors (see below), whose sum is σ = 417277552654584. Its totient is φ = 89737108097600.

The previous prime is 197421637814881. The next prime is 197421637814911. The reversal of 197421637814896 is 698418736124791.

It is an interprime number because it is at equal distance from previous prime (197421637814881) and next prime (197421637814911).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 560856925435 + ... + 560856925786.

Almost surely, 2^{197421637814896} is an apocalyptic number.

197421637814896 is a gapful number since it is divisible by the number (16) formed by its first and last digit.

It is an amenable number.

197421637814896 is an abundant number, since it is smaller than the sum of its proper divisors (219855914839688).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

197421637814896 is a wasteful number, since it uses less digits than its factorization.

197421637814896 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1121713851240 (or 1121713851234 counting only the distinct ones).

The product of its digits is 877879296, while the sum is 76.

The spelling of 197421637814896 in words is "one hundred ninety-seven trillion, four hundred twenty-one billion, six hundred thirty-seven million, eight hundred fourteen thousand, eight hundred ninety-six".