11000531440 has 40 divisors (see below), whose sum is σ = 25596196560. Its totient is φ = 4396778496.

The previous prime is 11000531429. The next prime is 11000531447. The reversal of 11000531440 is 4413500011.

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

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (11000531447) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 50751 + ... + 156769.

It is an arithmetic number, because the mean of its divisors is an integer number (639904914).

Almost surely, 2^11000531440 is an apocalyptic number.

11000531440 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

11000531440 is an abundant number, since it is smaller than the sum of its proper divisors (14595665120).

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

11000531440 is a wasteful number, since it uses less digits than its factorization.

11000531440 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 107329 (or 107323 counting only the distinct ones).

The product of its (nonzero) digits is 240, while the sum is 19.

The spelling of 11000531440 in words is "eleven billion, five hundred thirty-one thousand, four hundred forty".