3516217504649 has 2 divisors, whose sum is σ = 3516217504650. Its totient is φ = 3516217504648.

The previous prime is 3516217504577. The next prime is 3516217504661. The reversal of 3516217504649 is 9464057126153.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 3208684038400 + 307533466249 = 1791280^2 + 554557^2 .

It is a cyclic number.

It is not a de Polignac number, because 3516217504649 - 2¹² = 3516217500553 is a prime.

It is a super-2 number, since 2×3516217504649² (a number of 26 digits) contains 22 as substring.

It is a self number, because there is not a number n which added to its sum of digits gives 3516217504649.

It is not a weakly prime, because it can be changed into another prime (3516217504669) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1758108752324 + 1758108752325.

It is an arithmetic number, because the mean of its divisors is an integer number (1758108752325).

Almost surely, 2^{3516217504649} is an apocalyptic number.

It is an amenable number.

3516217504649 is a deficient number, since it is larger than the sum of its proper divisors (1).

3516217504649 is an equidigital number, since it uses as much as digits as its factorization.

3516217504649 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 5443200, while the sum is 53.

The spelling of 3516217504649 in words is "three trillion, five hundred sixteen billion, two hundred seventeen million, five hundred four thousand, six hundred forty-nine".