35538856139861 has 2 divisors, whose sum is σ = 35538856139862. Its totient is φ = 35538856139860.

The previous prime is 35538856139827. The next prime is 35538856139929. The reversal of 35538856139861 is 16893165883553.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 35409997396900 + 128858742961 = 5950630^2 + 358969^2 .

It is a cyclic number.

It is not a de Polignac number, because 35538856139861 - 2¹⁰ = 35538856138837 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 (35538856159861) 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, 17769428069930 + 17769428069931.

It is an arithmetic number, because the mean of its divisors is an integer number (17769428069931).

Almost surely, 2^{35538856139861} is an apocalyptic number.

It is an amenable number.

35538856139861 is a deficient number, since it is larger than the sum of its proper divisors (1).

35538856139861 is an equidigital number, since it uses as much as digits as its factorization.

35538856139861 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 559872000, while the sum is 71.

The spelling of 35538856139861 in words is "thirty-five trillion, five hundred thirty-eight billion, eight hundred fifty-six million, one hundred thirty-nine thousand, eight hundred sixty-one".