11115865470 has 64 divisors (see below), whose sum is σ = 27658278144. Its totient is φ = 2857063680.

The previous prime is 11115865433. The next prime is 11115865471. The reversal of 11115865470 is 7456851111.

It is a happy number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (11115865471) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 47649 + ... + 156531.

It is an arithmetic number, because the mean of its divisors is an integer number (432160596).

Almost surely, 2^11115865470 is an apocalyptic number.

11115865470 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is a practical number, because each smaller number is the sum of distinct divisors of 11115865470, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (13829139072).

11115865470 is an abundant number, since it is smaller than the sum of its proper divisors (16542412674).

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

11115865470 is a wasteful number, since it uses less digits than its factorization.

11115865470 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 109017.

The product of its (nonzero) digits is 33600, while the sum is 39.

The spelling of 11115865470 in words is "eleven billion, one hundred fifteen million, eight hundred sixty-five thousand, four hundred seventy".