111561066151859 has 2 divisors, whose sum is σ = 111561066151860. Its totient is φ = 111561066151858.

The previous prime is 111561066151841. The next prime is 111561066151867. The reversal of 111561066151859 is 958151660165111.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 111561066151859 - 2¹² = 111561066147763 is a prime.

It is not a weakly prime, because it can be changed into another prime (111561566151859) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 55780533075929 + 55780533075930.

It is an arithmetic number, because the mean of its divisors is an integer number (55780533075930).

Almost surely, 2^{111561066151859} is an apocalyptic number.

111561066151859 is a deficient number, since it is larger than the sum of its proper divisors (1).

111561066151859 is an equidigital number, since it uses as much as digits as its factorization.

111561066151859 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 1944000, while the sum is 56.

The spelling of 111561066151859 in words is "one hundred eleven trillion, five hundred sixty-one billion, sixty-six million, one hundred fifty-one thousand, eight hundred fifty-nine".