11415040440 has 64 divisors (see below), whose sum is σ = 34324365600. Its totient is φ = 3036966912.

The previous prime is 11415040411. The next prime is 11415040463. The reversal of 11415040440 is 4404051411.

It is a Harshad number since it is a multiple of its sum of digits (24).

It is a self number, because there is not a number n which added to its sum of digits gives 11415040440.

It is a congruent number.

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, 57885 + ... + 161804.

Almost surely, 2^11415040440 is an apocalyptic number.

11415040440 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

11415040440 is an abundant number, since it is smaller than the sum of its proper divisors (22909325160).

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

11415040440 is a wasteful number, since it uses less digits than its factorization.

11415040440 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 220136 (or 220132 counting only the distinct ones).

The product of its (nonzero) digits is 1280, while the sum is 24.

Adding to 11415040440 its reverse (4404051411), we get a palindrome (15819091851).

The spelling of 11415040440 in words is "eleven billion, four hundred fifteen million, forty thousand, four hundred forty".