111534443145 has 48 divisors (see below), whose sum is σ = 201784632192. Its totient is φ = 56883847680.

The previous prime is 111534443143. The next prime is 111534443147. The reversal of 111534443145 is 541344435111.

111534443145 is a `hidden beast` number, since 1 + 11 + 534 + 44 + 31 + 45 = 666.

It is an interprime number because it is at equal distance from previous prime (111534443143) and next prime (111534443147).

It is not a de Polignac number, because 111534443145 - 2¹ = 111534443143 is a prime.

It is a Curzon number.

It is not an unprimeable number, because it can be changed into a prime (111534443143) by changing a digit.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 4708822 + ... + 4732448.

It is an arithmetic number, because the mean of its divisors is an integer number (4203846504).

Almost surely, 2^111534443145 is an apocalyptic number.

111534443145 is a gapful number since it is divisible by the number (15) formed by its first and last digit.

It is an amenable number.

111534443145 is a deficient number, since it is larger than the sum of its proper divisors (90250189047).

111534443145 is a wasteful number, since it uses less digits than its factorization.

111534443145 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 28222 (or 28219 counting only the distinct ones).

The product of its digits is 57600, while the sum is 36.

Adding to 111534443145 its reverse (541344435111), we get a palindrome (652878878256).

The spelling of 111534443145 in words is "one hundred eleven billion, five hundred thirty-four million, four hundred forty-three thousand, one hundred forty-five".