111564843041 has 4 divisors (see below), whose sum is σ = 111567625092. Its totient is φ = 111562060992.

The previous prime is 111564842989. The next prime is 111564843043. The reversal of 111564843041 is 140348465111.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 29677297441 + 81887545600 = 172271^2 + 286160^2 .

It is a cyclic number.

It is not a de Polignac number, because 111564843041 - 2¹⁰ = 111564842017 is a prime.

It is a super-2 number, since 2×111564843041² (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 = 111564842986 and 111564843004.

It is not an unprimeable number, because it can be changed into a prime (111564843043) 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 3 ways as a sum of consecutive naturals, for example, 1329980 + ... + 1411373.

It is an arithmetic number, because the mean of its divisors is an integer number (27891906273).

Almost surely, 2^111564843041 is an apocalyptic number.

It is an amenable number.

111564843041 is a deficient number, since it is larger than the sum of its proper divisors (2782051).

111564843041 is an equidigital number, since it uses as much as digits as its factorization.

111564843041 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2782050.

The product of its (nonzero) digits is 46080, while the sum is 38.

The spelling of 111564843041 in words is "one hundred eleven billion, five hundred sixty-four million, eight hundred forty-three thousand, forty-one".