5016511616661 has 24 divisors (see below), whose sum is σ = 7516135265184. Its totient is φ = 3343588988400.

The previous prime is 5016511616647. The next prime is 5016511616671. The reversal of 5016511616661 is 1666161156105.

5016511616661 is digitally balanced in base 3, because in such base it contains all the possibile digits an equal number of times.

It is not a de Polignac number, because 5016511616661 - 2¹¹ = 5016511614613 is a prime.

It is a Curzon number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (5016511616621) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 1237446 + ... + 3400631.

It is an arithmetic number, because the mean of its divisors is an integer number (313172302716).

Almost surely, 2^{5016511616661} is an apocalyptic number.

It is an amenable number.

5016511616661 is a deficient number, since it is larger than the sum of its proper divisors (2499623648523).

5016511616661 is an equidigital number, since it uses as much as digits as its factorization.

5016511616661 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4642543 (or 4642531 counting only the distinct ones).

The product of its (nonzero) digits is 194400, while the sum is 45.

The spelling of 5016511616661 in words is "five trillion, sixteen billion, five hundred eleven million, six hundred sixteen thousand, six hundred sixty-one".