11532520890 has 72 divisors (see below), whose sum is σ = 32958260244. Its totient is φ = 2795760000.

The previous prime is 11532520871. The next prime is 11532520897. The reversal of 11532520890 is 9802523511.

11532520890 is a `hidden beast` number, since 1 + 1 + 53 + 2 + 520 + 89 + 0 = 666.

It can be written as a sum of positive squares in 2 ways, for example, as 11144391489 + 388129401 = 105567^2 + 19701^2 .

It is not an unprimeable number, because it can be changed into a prime (11532520897) 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 35 ways as a sum of consecutive naturals, for example, 518611 + ... + 540390.

Almost surely, 2^11532520890 is an apocalyptic number.

11532520890 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

11532520890 is an abundant number, since it is smaller than the sum of its proper divisors (21425739354).

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

11532520890 is a wasteful number, since it uses less digits than its factorization.

11532520890 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1059036 (or 1059022 counting only the distinct ones).

The product of its (nonzero) digits is 21600, while the sum is 36.

The spelling of 11532520890 in words is "eleven billion, five hundred thirty-two million, five hundred twenty thousand, eight hundred ninety".