11004131440 has 40 divisors (see below), whose sum is σ = 25590402288. Its totient is φ = 4400655360.

The previous prime is 11004131429. The next prime is 11004131459. The reversal of 11004131440 is 4413140011.

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

It is a congruent number.

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, 412920 + ... + 438760.

Almost surely, 2^11004131440 is an apocalyptic number.

11004131440 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

11004131440 is an abundant number, since it is smaller than the sum of its proper divisors (14586270848).

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

11004131440 is a wasteful number, since it uses less digits than its factorization.

11004131440 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 31177 (or 31171 counting only the distinct ones).

The product of its (nonzero) digits is 192, while the sum is 19.

Adding to 11004131440 its reverse (4413140011), we get a palindrome (15417271451).

The spelling of 11004131440 in words is "eleven billion, four million, one hundred thirty-one thousand, four hundred forty".