5616661111 has 4 divisors (see below), whose sum is σ = 5860863792. Its totient is φ = 5372458432.

The previous prime is 5616661073. The next prime is 5616661123. The reversal of 5616661111 is 1111666165.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 1111666165 = 5 ⋅222333233.

It is a cyclic number.

It is not a de Polignac number, because 5616661111 - 2¹³ = 5616652919 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (5616661151) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 122101306 + ... + 122101351.

It is an arithmetic number, because the mean of its divisors is an integer number (1465215948).

Almost surely, 2^5616661111 is an apocalyptic number.

5616661111 is a deficient number, since it is larger than the sum of its proper divisors (244202681).

5616661111 is a wasteful number, since it uses less digits than its factorization.

5616661111 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 244202680.

The product of its digits is 6480, while the sum is 34.

The square root of 5616661111 is about 74944.3867878042. The cubic root of 5616661111 is about 1777.5673868383.

The spelling of 5616661111 in words is "five billion, six hundred sixteen million, six hundred sixty-one thousand, one hundred eleven".