3686724361009 has 2 divisors, whose sum is σ = 3686724361010. Its totient is φ = 3686724361008.

The previous prime is 3686724361007. The next prime is 3686724361037. The reversal of 3686724361009 is 9001634276863.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 3582585843984 + 104138517025 = 1892772^2 + 322705^2 .

It is a cyclic number.

It is not a de Polignac number, because 3686724361009 - 2¹ = 3686724361007 is a prime.

Together with 3686724361007, it forms a pair of twin primes.

It is not a weakly prime, because it can be changed into another prime (3686724361007) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1843362180504 + 1843362180505.

It is an arithmetic number, because the mean of its divisors is an integer number (1843362180505).

Almost surely, 2^{3686724361009} is an apocalyptic number.

It is an amenable number.

3686724361009 is a deficient number, since it is larger than the sum of its proper divisors (1).

3686724361009 is an equidigital number, since it uses as much as digits as its factorization.

3686724361009 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 7838208, while the sum is 55.

The spelling of 3686724361009 in words is "three trillion, six hundred eighty-six billion, seven hundred twenty-four million, three hundred sixty-one thousand, nine".