11111345616 has 80 divisors (see below), whose sum is σ = 34531520000. Its totient is φ = 3007580544.

The previous prime is 11111345611. The next prime is 11111345633. The reversal of 11111345616 is 61654311111.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (11111345611) 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, 863866 + ... + 876633.

It is an arithmetic number, because the mean of its divisors is an integer number (431644000).

Almost surely, 2^11111345616 is an apocalyptic number.

11111345616 is a gapful number since it is divisible by the number (16) formed by its first and last digit.

It is an amenable number.

11111345616 is an abundant number, since it is smaller than the sum of its proper divisors (23420174384).

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

11111345616 is a wasteful number, since it uses less digits than its factorization.

11111345616 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1740536 (or 1740530 counting only the distinct ones).

The product of its digits is 2160, while the sum is 30.

Adding to 11111345616 its reverse (61654311111), we get a palindrome (72765656727).

The spelling of 11111345616 in words is "eleven billion, one hundred eleven million, three hundred forty-five thousand, six hundred sixteen".