3616646561389 has 2 divisors, whose sum is σ = 3616646561390. Its totient is φ = 3616646561388.

The previous prime is 3616646561327. The next prime is 3616646561417. The reversal of 3616646561389 is 9831656466163.

It is a happy number.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 2374665590025 + 1241980971364 = 1540995^2 + 1114442^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-3616646561389 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 3616646561389.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (3616646564389) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1808323280694 + 1808323280695.

It is an arithmetic number, because the mean of its divisors is an integer number (1808323280695).

Almost surely, 2^{3616646561389} is an apocalyptic number.

It is an amenable number.

3616646561389 is a deficient number, since it is larger than the sum of its proper divisors (1).

3616646561389 is an equidigital number, since it uses as much as digits as its factorization.

3616646561389 is an evil number, because the sum of its binary digits is even.

The product of its digits is 100776960, while the sum is 64.

The spelling of 3616646561389 in words is "three trillion, six hundred sixteen billion, six hundred forty-six million, five hundred sixty-one thousand, three hundred eighty-nine".