6650516515663 has 2 divisors, whose sum is σ = 6650516515664. Its totient is φ = 6650516515662.

The previous prime is 6650516515499. The next prime is 6650516515667. The reversal of 6650516515663 is 3665156150566.

It is a happy number.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 6650516515663 - 2¹⁷ = 6650516384591 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (6650516515667) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 3325258257831 + 3325258257832.

It is an arithmetic number, because the mean of its divisors is an integer number (3325258257832).

Almost surely, 2^{6650516515663} is an apocalyptic number.

6650516515663 is a deficient number, since it is larger than the sum of its proper divisors (1).

6650516515663 is an equidigital number, since it uses as much as digits as its factorization.

6650516515663 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 14580000, while the sum is 55.

The spelling of 6650516515663 in words is "six trillion, six hundred fifty billion, five hundred sixteen million, five hundred fifteen thousand, six hundred sixty-three".