5611016016661 has 16 divisors (see below), whose sum is σ = 6177324384000. Its totient is φ = 5054106910720.

The previous prime is 5611016016527. The next prime is 5611016016673. The reversal of 5611016016661 is 1666106101165.

It is a cyclic number.

It is not a de Polignac number, because 5611016016661 - 2²⁵ = 5610982462229 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (5651016016661) 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, 3010965 + ... + 4504213.

It is an arithmetic number, because the mean of its divisors is an integer number (386082774000).

Almost surely, 2^{5611016016661} is an apocalyptic number.

It is an amenable number.

5611016016661 is a deficient number, since it is larger than the sum of its proper divisors (566308367339).

5611016016661 is a wasteful number, since it uses less digits than its factorization.

5611016016661 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1496396.

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

The spelling of 5611016016661 in words is "five trillion, six hundred eleven billion, sixteen million, sixteen thousand, six hundred sixty-one".