197930598825961 has 9 divisors (see below), whose sum is σ = 202876511386629. Its totient is φ = 193102460493600.

The previous prime is 197930598825931. The next prime is 197930598826003. The reversal of 197930598825961 is 169528895039791.

The square root of 197930598825961 is 14068781.

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

It can be written as a sum of positive squares in 4 ways, for example, as 128814986409561 + 69115612416400 = 11349669^2 + 8313580^2 .

It is not a de Polignac number, because 197930598825961 - 2⁷ = 197930598825833 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (197930598825931) by changing a digit.

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 8 ways as a sum of consecutive naturals, for example, 576648451 + ... + 576991591.

Almost surely, 2^{197930598825961} is an apocalyptic number.

197930598825961 is the 14068781-st square number.

197930598825961 is the 7034391-st centered octagonal number.

It is an amenable number.

197930598825961 is a deficient number, since it is larger than the sum of its proper divisors (4945912560668).

197930598825961 is an frugal number, since it uses more digits than its factorization.

197930598825961 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 686364 (or 343182 counting only the distinct ones).

The product of its (nonzero) digits is 2645395200, while the sum is 82.

The spelling of 197930598825961 in words is "one hundred ninety-seven trillion, nine hundred thirty billion, five hundred ninety-eight million, eight hundred twenty-five thousand, nine hundred sixty-one".