11132405640 has 64 divisors (see below), whose sum is σ = 37108022400. Its totient is φ = 2968641216.

The previous prime is 11132405639. The next prime is 11132405657. The reversal of 11132405640 is 4650423111.

It is a happy number.

11132405640 is a `hidden beast` number, since 1 + 1 + 13 + 2 + 4 + 0 + 5 + 640 = 666.

It is a Harshad number since it is a multiple of its sum of digits (27).

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, 5152812 + ... + 5154971.

It is an arithmetic number, because the mean of its divisors is an integer number (579812850).

Almost surely, 2^11132405640 is an apocalyptic number.

11132405640 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

11132405640 is an abundant number, since it is smaller than the sum of its proper divisors (25975616760).

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

11132405640 is a wasteful number, since it uses less digits than its factorization.

11132405640 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 10307803 (or 10307793 counting only the distinct ones).

The product of its (nonzero) digits is 2880, while the sum is 27.

Adding to 11132405640 its reverse (4650423111), we get a palindrome (15782828751).

The spelling of 11132405640 in words is "eleven billion, one hundred thirty-two million, four hundred five thousand, six hundred forty".