111434541666 has 32 divisors (see below), whose sum is σ = 259513331328. Its totient is φ = 31237714560.

The previous prime is 111434541661. The next prime is 111434541689. The reversal of 111434541666 is 666145434111.

It is a super-2 number, since 2×111434541666² (a number of 23 digits) contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (42).

It is not an unprimeable number, because it can be changed into a prime (111434541661) 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, 25027995 + ... + 25032446.

It is an arithmetic number, because the mean of its divisors is an integer number (8109791604).

Almost surely, 2^111434541666 is an apocalyptic number.

111434541666 is an abundant number, since it is smaller than the sum of its proper divisors (148078789662).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

111434541666 is a wasteful number, since it uses less digits than its factorization.

111434541666 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 50060506.

The product of its digits is 207360, while the sum is 42.

Adding to 111434541666 its reverse (666145434111), we get a palindrome (777579975777).

The spelling of 111434541666 in words is "one hundred eleven billion, four hundred thirty-four million, five hundred forty-one thousand, six hundred sixty-six".