11404331440 has 40 divisors (see below), whose sum is σ = 26521347168. Its totient is φ = 4560652800.

The previous prime is 11404331437. The next prime is 11404331467. The reversal of 11404331440 is 4413340411.

It is a tau number, because it is divible by the number of its divisors (40).

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 381684 + ... + 410476.

Almost surely, 2^11404331440 is an apocalyptic number.

11404331440 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

11404331440 is an abundant number, since it is smaller than the sum of its proper divisors (15117015728).

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

11404331440 is a wasteful number, since it uses less digits than its factorization.

11404331440 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 33757 (or 33751 counting only the distinct ones).

The product of its (nonzero) digits is 2304, while the sum is 25.

Adding to 11404331440 its reverse (4413340411), we get a palindrome (15817671851).

The spelling of 11404331440 in words is "eleven billion, four hundred four million, three hundred thirty-one thousand, four hundred forty".