961395661357 has 2 divisors, whose sum is σ = 961395661358. Its totient is φ = 961395661356.

The previous prime is 961395661333. The next prime is 961395661361. The reversal of 961395661357 is 753166593169.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 816747795081 + 144647866276 = 903741^2 + 380326^2 .

It is an emirp because it is prime and its reverse (753166593169) is a distict prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-961395661357 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 961395661295 and 961395661304.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (961395661957) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 480697830678 + 480697830679.

It is an arithmetic number, because the mean of its divisors is an integer number (480697830679).

Almost surely, 2^961395661357 is an apocalyptic number.

It is an amenable number.

961395661357 is a deficient number, since it is larger than the sum of its proper divisors (1).

961395661357 is an equidigital number, since it uses as much as digits as its factorization.

961395661357 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 27556200, while the sum is 61.

The spelling of 961395661357 in words is "nine hundred sixty-one billion, three hundred ninety-five million, six hundred sixty-one thousand, three hundred fifty-seven".