197975163136 has 27 divisors (see below), whose sum is σ = 395191196701. Its totient is φ = 98984022016.

The previous prime is 197975163103. The next prime is 197975163143. The reversal of 197975163136 is 631361579791.

The square root of 197975163136 is 444944.

It is a perfect power (a square), and thus also a powerful number.

It can be written as a sum of positive squares in only one way, i.e., 140067553536 + 57907609600 = 374256^2 + 240640^2 .

It is a Duffinian number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 2 ways as a sum of consecutive naturals, for example, 7105200 + ... + 7133008.

Almost surely, 2^197975163136 is an apocalyptic number.

197975163136 is a gapful number since it is divisible by the number (16) formed by its first and last digit.

197975163136 is the 444944-th square number.

It is an amenable number.

197975163136 is a deficient number, since it is larger than the sum of its proper divisors (197216033565).

197975163136 is an frugal number, since it uses more digits than its factorization.

197975163136 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 55634 (or 27811 counting only the distinct ones).

The product of its digits is 6429780, while the sum is 58.

The spelling of 197975163136 in words is "one hundred ninety-seven billion, nine hundred seventy-five million, one hundred sixty-three thousand, one hundred thirty-six".