1115115560 has 64 divisors (see below), whose sum is σ = 2764903680. Its totient is φ = 402151680.

The previous prime is 1115115503. The next prime is 1115115571. The reversal of 1115115560 is 655115111.

It is a super-2 number, since 2×1115115560² = 2486965424308227200, which contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (26).

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, 2576 + ... + 47295.

It is an arithmetic number, because the mean of its divisors is an integer number (43201620).

Almost surely, 2^1115115560 is an apocalyptic number.

1115115560 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 1115115560, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (1382451840).

1115115560 is an abundant number, since it is smaller than the sum of its proper divisors (1649788120).

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

1115115560 is a wasteful number, since it uses less digits than its factorization.

1115115560 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 49938 (or 49934 counting only the distinct ones).

The product of its (nonzero) digits is 750, while the sum is 26.

The square root of 1115115560 is about 33393.3460437854. The cubic root of 1115115560 is about 1036.9869522215.

The spelling of 1115115560 in words is "one billion, one hundred fifteen million, one hundred fifteen thousand, five hundred sixty".