197508026172 has 24 divisors (see below), whose sum is σ = 460880283136. Its totient is φ = 65831977008.

The previous prime is 197508026167. The next prime is 197508026189. The reversal of 197508026172 is 271620805791.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 296428 + ... + 694899.

Almost surely, 2^197508026172 is an apocalyptic number.

197508026172 is a gapful number since it is divisible by the number (12) formed by its first and last digit.

It is an amenable number.

197508026172 is an abundant number, since it is smaller than the sum of its proper divisors (263372256964).

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

197508026172 is a wasteful number, since it uses less digits than its factorization.

197508026172 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1007937 (or 1007935 counting only the distinct ones).

The product of its (nonzero) digits is 423360, while the sum is 48.

The spelling of 197508026172 in words is "one hundred ninety-seven billion, five hundred eight million, twenty-six thousand, one hundred seventy-two".