111666005536611 has 16 divisors (see below), whose sum is σ = 148972865444864. Its totient is φ = 74401578717984.

The previous prime is 111666005536601. The next prime is 111666005536649. The reversal of 111666005536611 is 116635500666111.

It is not a de Polignac number, because 111666005536611 - 2¹³ = 111666005528419 is a prime.

It is a super-2 number, since 2×111666005536611² (a number of 29 digits) contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (111666005536601) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 111928590 + ... + 112921836.

It is an arithmetic number, because the mean of its divisors is an integer number (9310804090304).

Almost surely, 2^{111666005536611} is an apocalyptic number.

111666005536611 is a deficient number, since it is larger than the sum of its proper divisors (37306859908253).

111666005536611 is a wasteful number, since it uses less digits than its factorization.

111666005536611 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1014570.

The product of its (nonzero) digits is 583200, while the sum is 48.

The spelling of 111666005536611 in words is "one hundred eleven trillion, six hundred sixty-six billion, five million, five hundred thirty-six thousand, six hundred eleven".