11533464618 has 64 divisors (see below), whose sum is σ = 25413991680. Its totient is φ = 3467847168.

The previous prime is 11533464589. The next prime is 11533464653. The reversal of 11533464618 is 81646433511.

It is a self number, because there is not a number n which added to its sum of digits gives 11533464618.

It is an unprimeable number.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 611355 + ... + 629937.

It is an arithmetic number, because the mean of its divisors is an integer number (397093620).

Almost surely, 2^11533464618 is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 11533464618, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (12706995840).

11533464618 is an abundant number, since it is smaller than the sum of its proper divisors (13880527062).

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

11533464618 is a wasteful number, since it uses less digits than its factorization.

11533464618 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 18783.

The product of its digits is 207360, while the sum is 42.

The spelling of 11533464618 in words is "eleven billion, five hundred thirty-three million, four hundred sixty-four thousand, six hundred eighteen".