6516600611611 has 16 divisors (see below), whose sum is σ = 6575724698400. Its totient is φ = 6457748226048.

The previous prime is 6516600611567. The next prime is 6516600611639. The reversal of 6516600611611 is 1161160066156.

It is a cyclic number.

It is not a de Polignac number, because 6516600611611 - 2⁷ = 6516600611483 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (6516600011611) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 125988891 + ... + 126040603.

It is an arithmetic number, because the mean of its divisors is an integer number (410982793650).

Almost surely, 2^{6516600611611} is an apocalyptic number.

6516600611611 is a deficient number, since it is larger than the sum of its proper divisors (59124086789).

6516600611611 is a wasteful number, since it uses less digits than its factorization.

6516600611611 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 54318.

The product of its (nonzero) digits is 38880, while the sum is 40.

Adding to 6516600611611 its reverse (1161160066156), we get a palindrome (7677760677767).

The spelling of 6516600611611 in words is "six trillion, five hundred sixteen billion, six hundred million, six hundred eleven thousand, six hundred eleven".