11532531140 has 24 divisors (see below), whose sum is σ = 26081263320. Its totient is φ = 4258165248.

The previous prime is 11532531139. The next prime is 11532531151. The reversal of 11532531140 is 4113523511.

It can be written as a sum of positive squares in 4 ways, for example, as 2813453764 + 8719077376 = 53042^2 + 93376^2 .

It is a Harshad number since it is a multiple of its sum of digits (26).

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, 22177685 + ... + 22178204.

It is an arithmetic number, because the mean of its divisors is an integer number (1086719305).

Almost surely, 2^11532531140 is an apocalyptic number.

11532531140 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

11532531140 is an abundant number, since it is smaller than the sum of its proper divisors (14548732180).

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

11532531140 is a wasteful number, since it uses less digits than its factorization.

11532531140 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 44355911 (or 44355909 counting only the distinct ones).

The product of its (nonzero) digits is 1800, while the sum is 26.

The spelling of 11532531140 in words is "eleven billion, five hundred thirty-two million, five hundred thirty-one thousand, one hundred forty".