1616354611717 has 2 divisors, whose sum is σ = 1616354611718. Its totient is φ = 1616354611716.

The previous prime is 1616354611657. The next prime is 1616354611721. The reversal of 1616354611717 is 7171164536161.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 1581442062916 + 34912548801 = 1257554^2 + 186849^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-1616354611717 is a prime.

It is a super-2 number, since 2×1616354611717² (a number of 25 digits) contains 22 as substring.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (1616357611717) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 808177305858 + 808177305859.

It is an arithmetic number, because the mean of its divisors is an integer number (808177305859).

Almost surely, 2^{1616354611717} is an apocalyptic number.

It is an amenable number.

1616354611717 is a deficient number, since it is larger than the sum of its proper divisors (1).

1616354611717 is an equidigital number, since it uses as much as digits as its factorization.

1616354611717 is an evil number, because the sum of its binary digits is even.

The product of its digits is 635040, while the sum is 49.

The spelling of 1616354611717 in words is "one trillion, six hundred sixteen billion, three hundred fifty-four million, six hundred eleven thousand, seven hundred seventeen".