111616210541 has 8 divisors (see below), whose sum is σ = 122769447168. Its totient is φ = 101469281100.

The previous prime is 111616210499. The next prime is 111616210547. The reversal of 111616210541 is 145012616111.

It is not a de Polignac number, because 111616210541 - 2¹⁸ = 111615948397 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (111616210547) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 41928125 + ... + 41930786.

It is an arithmetic number, because the mean of its divisors is an integer number (15346180896).

Almost surely, 2^111616210541 is an apocalyptic number.

111616210541 is a gapful number since it is divisible by the number (11) formed by its first and last digit.

It is an amenable number.

111616210541 is a deficient number, since it is larger than the sum of its proper divisors (11153236627).

111616210541 is an frugal number, since it uses more digits than its factorization.

111616210541 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 83858944 (or 83858922 counting only the distinct ones).

The product of its (nonzero) digits is 1440, while the sum is 29.

Adding to 111616210541 its reverse (145012616111), we get a palindrome (256628826652).

The spelling of 111616210541 in words is "one hundred eleven billion, six hundred sixteen million, two hundred ten thousand, five hundred forty-one".