635043355000961 has 2 divisors, whose sum is σ = 635043355000962. Its totient is φ = 635043355000960.

The previous prime is 635043355000933. The next prime is 635043355000963. The reversal of 635043355000961 is 169000553340536.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 511118724964225 + 123924630036736 = 22607935^2 + 11132144^2 .

It is a cyclic number.

It is not a de Polignac number, because 635043355000961 - 2⁴² = 630645308489857 is a prime.

Together with 635043355000963, it forms a pair of twin primes.

It is a Chen prime.

It is not a weakly prime, because it can be changed into another prime (635043355000963) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 317521677500480 + 317521677500481.

It is an arithmetic number, because the mean of its divisors is an integer number (317521677500481).

Almost surely, 2^{635043355000961} is an apocalyptic number.

It is an amenable number.

635043355000961 is a deficient number, since it is larger than the sum of its proper divisors (1).

635043355000961 is an equidigital number, since it uses as much as digits as its factorization.

635043355000961 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 4374000, while the sum is 50.

The spelling of 635043355000961 in words is "six hundred thirty-five trillion, forty-three billion, three hundred fifty-five million, nine hundred sixty-one", and thus it is an aban number.