6616885313651 has 2 divisors, whose sum is σ = 6616885313652. Its totient is φ = 6616885313650.

The previous prime is 6616885313579. The next prime is 6616885313693. The reversal of 6616885313651 is 1563135886166.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 6616885313651 - 2¹⁸ = 6616885051507 is a prime.

It is not a weakly prime, because it can be changed into another prime (6616885313251) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 3308442656825 + 3308442656826.

It is an arithmetic number, because the mean of its divisors is an integer number (3308442656826).

Almost surely, 2^{6616885313651} is an apocalyptic number.

6616885313651 is a deficient number, since it is larger than the sum of its proper divisors (1).

6616885313651 is an equidigital number, since it uses as much as digits as its factorization.

6616885313651 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 18662400, while the sum is 59.

The spelling of 6616885313651 in words is "six trillion, six hundred sixteen billion, eight hundred eighty-five million, three hundred thirteen thousand, six hundred fifty-one".