3516217684249 has 2 divisors, whose sum is σ = 3516217684250. Its totient is φ = 3516217684248.

The previous prime is 3516217684219. The next prime is 3516217684261. The reversal of 3516217684249 is 9424867126153.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 2950946780224 + 565270904025 = 1717832^2 + 751845^2 .

It is a cyclic number.

It is not a de Polignac number, because 3516217684249 - 2¹⁵ = 3516217651481 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 3516217684193 and 3516217684202.

It is not a weakly prime, because it can be changed into another prime (3516217684219) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1758108842124 + 1758108842125.

It is an arithmetic number, because the mean of its divisors is an integer number (1758108842125).

Almost surely, 2^{3516217684249} is an apocalyptic number.

It is an amenable number.

3516217684249 is a deficient number, since it is larger than the sum of its proper divisors (1).

3516217684249 is an equidigital number, since it uses as much as digits as its factorization.

3516217684249 is an evil number, because the sum of its binary digits is even.

The product of its digits is 17418240, while the sum is 58.

The spelling of 3516217684249 in words is "three trillion, five hundred sixteen billion, two hundred seventeen million, six hundred eighty-four thousand, two hundred forty-nine".