197957228303261 has 8 divisors (see below), whose sum is σ = 226346496363264. Its totient is φ = 169595376247440.

The previous prime is 197957228303249. The next prime is 197957228303299. The reversal of 197957228303261 is 162303822759791.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-197957228303261 is a prime.

It is a Duffinian number.

It is a Curzon number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (197957228303231) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 6853985570 + ... + 6854014451.

It is an arithmetic number, because the mean of its divisors is an integer number (28293312045408).

Almost surely, 2^{197957228303261} is an apocalyptic number.

It is an amenable number.

197957228303261 is a deficient number, since it is larger than the sum of its proper divisors (28389268060003).

197957228303261 is a wasteful number, since it uses less digits than its factorization.

197957228303261 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 13708002091.

The product of its (nonzero) digits is 68584320, while the sum is 65.

The spelling of 197957228303261 in words is "one hundred ninety-seven trillion, nine hundred fifty-seven billion, two hundred twenty-eight million, three hundred three thousand, two hundred sixty-one".