101243565413 has 2 divisors, whose sum is σ = 101243565414. Its totient is φ = 101243565412.

The previous prime is 101243565407. The next prime is 101243565443. The reversal of 101243565413 is 314565342101.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 95087123044 + 6156442369 = 308362^2 + 78463^2 .

It is a cyclic number.

It is not a de Polignac number, because 101243565413 - 2¹² = 101243561317 is a prime.

It is a Sophie Germain prime.

It is a Curzon number.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (101243565443) 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 as a sum of consecutive naturals, namely, 50621782706 + 50621782707.

It is an arithmetic number, because the mean of its divisors is an integer number (50621782707).

Almost surely, 2^101243565413 is an apocalyptic number.

It is an amenable number.

101243565413 is a deficient number, since it is larger than the sum of its proper divisors (1).

101243565413 is an equidigital number, since it uses as much as digits as its factorization.

101243565413 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 43200, while the sum is 35.

The spelling of 101243565413 in words is "one hundred one billion, two hundred forty-three million, five hundred sixty-five thousand, four hundred thirteen".