197871773980 has 24 divisors (see below), whose sum is σ = 429859372320. Its totient is φ = 76419443520.

The previous prime is 197871773977. The next prime is 197871773999. The reversal of 197871773980 is 89377178791.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 170578536 + ... + 170579695.

It is an arithmetic number, because the mean of its divisors is an integer number (17910807180).

Almost surely, 2^197871773980 is an apocalyptic number.

197871773980 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

197871773980 is an abundant number, since it is smaller than the sum of its proper divisors (231987598340).

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

197871773980 is a wasteful number, since it uses less digits than its factorization.

197871773980 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 341158269 (or 341158267 counting only the distinct ones).

The product of its (nonzero) digits is 37340352, while the sum is 67.

The spelling of 197871773980 in words is "one hundred ninety-seven billion, eight hundred seventy-one million, seven hundred seventy-three thousand, nine hundred eighty".