1066161111 has 16 divisors (see below), whose sum is σ = 1446812160. Its totient is φ = 698173920.

The previous prime is 1066161101. The next prime is 1066161121. The reversal of 1066161111 is 1111616601.

It is an interprime number because it is at equal distance from previous prime (1066161101) and next prime (1066161121).

It is not a de Polignac number, because 1066161111 - 2⁷ = 1066160983 is a prime.

It is a super-2 number, since 2×1066161111² = 2273399029217508642, which contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1066161101) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 147070 + ... + 154148.

It is an arithmetic number, because the mean of its divisors is an integer number (90425760).

Almost surely, 2^1066161111 is an apocalyptic number.

1066161111 is a deficient number, since it is larger than the sum of its proper divisors (380651049).

1066161111 is an equidigital number, since it uses as much as digits as its factorization.

1066161111 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 7966.

The product of its (nonzero) digits is 216, while the sum is 24.

The square root of 1066161111 is about 32652.1226109422. The cubic root of 1066161111 is about 1021.5844626506.

Adding to 1066161111 its reverse (1111616601), we get a palindrome (2177777712).

The spelling of 1066161111 in words is "one billion, sixty-six million, one hundred sixty-one thousand, one hundred eleven".