11521133040 has 40 divisors (see below), whose sum is σ = 35715513168. Its totient is φ = 3072302080.

The previous prime is 11521132991. The next prime is 11521133081. The reversal of 11521133040 is 4033112511.

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

It is a junction number, because it is equal to n+sod(n) for n = 11521132998 and 11521133016.

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, 24002121 + ... + 24002600.

Almost surely, 2^11521133040 is an apocalyptic number.

11521133040 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

11521133040 is an abundant number, since it is smaller than the sum of its proper divisors (24194380128).

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

11521133040 is a wasteful number, since it uses less digits than its factorization.

11521133040 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 48004737 (or 48004731 counting only the distinct ones).

The product of its (nonzero) digits is 360, while the sum is 21.

Adding to 11521133040 its reverse (4033112511), we get a palindrome (15554245551).

The spelling of 11521133040 in words is "eleven billion, five hundred twenty-one million, one hundred thirty-three thousand, forty".