111616610056061 has 4 divisors (see below), whose sum is σ = 121763574606624. Its totient is φ = 101469645505500.

The previous prime is 111616610056031. The next prime is 111616610056093. The reversal of 111616610056061 is 160650016616111.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-111616610056061 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 (111616610056031) 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, 5073482275265 + ... + 5073482275286.

It is an arithmetic number, because the mean of its divisors is an integer number (30440893651656).

Almost surely, 2^{111616610056061} is an apocalyptic number.

111616610056061 is a gapful number since it is divisible by the number (11) formed by its first and last digit.

It is an amenable number.

111616610056061 is a deficient number, since it is larger than the sum of its proper divisors (10146964550563).

111616610056061 is a wasteful number, since it uses less digits than its factorization.

111616610056061 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 10146964550562.

The product of its (nonzero) digits is 38880, while the sum is 41.

The spelling of 111616610056061 in words is "one hundred eleven trillion, six hundred sixteen billion, six hundred ten million, fifty-six thousand, sixty-one".