111445754666561 has 8 divisors (see below), whose sum is σ = 127426854382464. Its totient is φ = 95479724355840.

The previous prime is 111445754666527. The next prime is 111445754666581. The reversal of 111445754666561 is 165666457544111.

It is a happy number.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 111445754666561 - 2¹⁸ = 111445754404417 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 111445754666494 and 111445754666503.

It is not an unprimeable number, because it can be changed into a prime (111445754666581) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 3767335445 + ... + 3767365026.

It is an arithmetic number, because the mean of its divisors is an integer number (15928356797808).

Almost surely, 2^{111445754666561} is an apocalyptic number.

It is an amenable number.

111445754666561 is a deficient number, since it is larger than the sum of its proper divisors (15981099715903).

111445754666561 is an equidigital number, since it uses as much as digits as its factorization.

111445754666561 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 7534702591.

The product of its digits is 72576000, while the sum is 62.

The spelling of 111445754666561 in words is "one hundred eleven trillion, four hundred forty-five billion, seven hundred fifty-four million, six hundred sixty-six thousand, five hundred sixty-one".