11115513532 has 24 divisors (see below), whose sum is σ = 20479389840. Its totient is φ = 5264357760.

The previous prime is 11115513527. The next prime is 11115513533. The reversal of 11115513532 is 23531551111.

It is a self number, because there is not a number n which added to its sum of digits gives 11115513532.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (11115513533) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 757368 + ... + 771904.

It is an arithmetic number, because the mean of its divisors is an integer number (853307910).

Almost surely, 2^11115513532 is an apocalyptic number.

It is an amenable number.

11115513532 is a deficient number, since it is larger than the sum of its proper divisors (9363876308).

11115513532 is a wasteful number, since it uses less digits than its factorization.

11115513532 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 24621 (or 24619 counting only the distinct ones).

The product of its digits is 2250, while the sum is 28.

The spelling of 11115513532 in words is "eleven billion, one hundred fifteen million, five hundred thirteen thousand, five hundred thirty-two".