1201940952917 has 2 divisors, whose sum is σ = 1201940952918. Its totient is φ = 1201940952916.

The previous prime is 1201940952851. The next prime is 1201940952929. The reversal of 1201940952917 is 7192590491021.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 1028863320241 + 173077632676 = 1014329^2 + 416026^2 .

It is a cyclic number.

It is not a de Polignac number, because 1201940952917 - 2¹² = 1201940948821 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (1201940952967) 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 as a sum of consecutive naturals, namely, 600970476458 + 600970476459.

It is an arithmetic number, because the mean of its divisors is an integer number (600970476459).

Almost surely, 2^{1201940952917} is an apocalyptic number.

It is an amenable number.

1201940952917 is a deficient number, since it is larger than the sum of its proper divisors (1).

1201940952917 is an equidigital number, since it uses as much as digits as its factorization.

1201940952917 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 408240, while the sum is 50.

The spelling of 1201940952917 in words is "one trillion, two hundred one billion, nine hundred forty million, nine hundred fifty-two thousand, nine hundred seventeen".