111445545541 has 8 divisors (see below), whose sum is σ = 123289311168. Its totient is φ = 99887172000.

The previous prime is 111445545503. The next prime is 111445545571. The reversal of 111445545541 is 145545544111.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 111445545541 - 2³¹ = 109298061893 is a prime.

It is a super-2 number, since 2×111445545541² (a number of 23 digits) contains 22 as substring.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 111445545494 and 111445545503.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (111445545571) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 71347200 + ... + 71348761.

It is an arithmetic number, because the mean of its divisors is an integer number (15411163896).

Almost surely, 2^111445545541 is an apocalyptic number.

111445545541 is a gapful number since it is divisible by the number (11) formed by its first and last digit.

It is an amenable number.

111445545541 is a deficient number, since it is larger than the sum of its proper divisors (11843765627).

111445545541 is a wasteful number, since it uses less digits than its factorization.

111445545541 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 142696043.

The product of its digits is 160000, while the sum is 40.

The spelling of 111445545541 in words is "one hundred eleven billion, four hundred forty-five million, five hundred forty-five thousand, five hundred forty-one".