111205609379 has 2 divisors, whose sum is σ = 111205609380. Its totient is φ = 111205609378.

The previous prime is 111205609373. The next prime is 111205609391. The reversal of 111205609379 is 973906502111.

It is a weak prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-111205609379 is a prime.

It is not a weakly prime, because it can be changed into another prime (111205609373) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 55602804689 + 55602804690.

It is an arithmetic number, because the mean of its divisors is an integer number (55602804690).

Almost surely, 2^111205609379 is an apocalyptic number.

111205609379 is a deficient number, since it is larger than the sum of its proper divisors (1).

111205609379 is an equidigital number, since it uses as much as digits as its factorization.

111205609379 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 102060, while the sum is 44.

The spelling of 111205609379 in words is "one hundred eleven billion, two hundred five million, six hundred nine thousand, three hundred seventy-nine".