111666557014 has 4 divisors (see below), whose sum is σ = 167499835524. Its totient is φ = 55833278506.

The previous prime is 111666557011. The next prime is 111666557027. The reversal of 111666557014 is 410755666111.

It is a semiprime because it is the product of two primes.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (111666557011) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 27916639252 + ... + 27916639255.

It is an arithmetic number, because the mean of its divisors is an integer number (41874958881).

Almost surely, 2^111666557014 is an apocalyptic number.

111666557014 is a deficient number, since it is larger than the sum of its proper divisors (55833278510).

111666557014 is an equidigital number, since it uses as much as digits as its factorization.

111666557014 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 55833278509.

The product of its (nonzero) digits is 151200, while the sum is 43.

The spelling of 111666557014 in words is "one hundred eleven billion, six hundred sixty-six million, five hundred fifty-seven thousand, fourteen".