13946539567109 has 2 divisors, whose sum is σ = 13946539567110. Its totient is φ = 13946539567108.

The previous prime is 13946539567087. The next prime is 13946539567141. The reversal of 13946539567109 is 90176593564931.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 13384110064900 + 562429502209 = 3658430^2 + 749953^2 .

It is a cyclic number.

It is not a de Polignac number, because 13946539567109 - 2¹² = 13946539563013 is a prime.

It is a super-2 number, since 2×13946539567109² (a number of 27 digits) contains 22 as substring.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (13946536567109) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 6973269783554 + 6973269783555.

It is an arithmetic number, because the mean of its divisors is an integer number (6973269783555).

Almost surely, 2^{13946539567109} is an apocalyptic number.

It is an amenable number.

13946539567109 is a deficient number, since it is larger than the sum of its proper divisors (1).

13946539567109 is an equidigital number, since it uses as much as digits as its factorization.

13946539567109 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 165337200, while the sum is 68.

The spelling of 13946539567109 in words is "thirteen trillion, nine hundred forty-six billion, five hundred thirty-nine million, five hundred sixty-seven thousand, one hundred nine".