11111041040 has 80 divisors (see below), whose sum is σ = 28200070080. Its totient is φ = 4037736960.

The previous prime is 11111041037. The next prime is 11111041079. The reversal of 11111041040 is 4014011111.

It is a tau number, because it is divible by the number of its divisors (80).

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 1780646 + ... + 1786874.

It is an arithmetic number, because the mean of its divisors is an integer number (352500876).

Almost surely, 2^11111041040 is an apocalyptic number.

11111041040 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 11111041040, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (14100035040).

11111041040 is an abundant number, since it is smaller than the sum of its proper divisors (17089029040).

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

11111041040 is a wasteful number, since it uses less digits than its factorization.

11111041040 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 8280 (or 8274 counting only the distinct ones).

The product of its (nonzero) digits is 16, while the sum is 14.

Adding to 11111041040 its reverse (4014011111), we get a palindrome (15125052151).

The spelling of 11111041040 in words is "eleven billion, one hundred eleven million, forty-one thousand, forty".