1111111100560 has 80 divisors (see below), whose sum is σ = 2602470931200. Its totient is φ = 441153312768.

The previous prime is 1111111100537. The next prime is 1111111100563. The reversal of 1111111100560 is 650011111111.

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

It is not an unprimeable number, because it can be changed into a prime (1111111100563) 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, 78466761 + ... + 78480919.

It is an arithmetic number, because the mean of its divisors is an integer number (32530886640).

Almost surely, 2^{1111111100560} is an apocalyptic number.

1111111100560 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 1111111100560, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (1301235465600).

1111111100560 is an abundant number, since it is smaller than the sum of its proper divisors (1491359830640).

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

1111111100560 is a wasteful number, since it uses less digits than its factorization.

1111111100560 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 21368 (or 21362 counting only the distinct ones).

The product of its (nonzero) digits is 30, while the sum is 19.

Adding to 1111111100560 its reverse (650011111111), we get a palindrome (1761122211671).

The spelling of 1111111100560 in words is "one trillion, one hundred eleven billion, one hundred eleven million, one hundred thousand, five hundred sixty".