11532139344 has 160 divisors (see below), whose sum is σ = 36245239680. Its totient is φ = 3481574400.

The previous prime is 11532139343. The next prime is 11532139373. The reversal of 11532139344 is 44393123511.

It is a Harshad number since it is a multiple of its sum of digits (36).

It is a junction number, because it is equal to n+sod(n) for n = 11532139299 and 11532139308.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (11532139343) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 1311924 + ... + 1320684.

It is an arithmetic number, because the mean of its divisors is an integer number (226532748).

Almost surely, 2^11532139344 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 11532139344, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (18122619840).

11532139344 is an abundant number, since it is smaller than the sum of its proper divisors (24713100336).

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

11532139344 is a wasteful number, since it uses less digits than its factorization.

11532139344 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 9066 (or 9054 counting only the distinct ones).

The product of its digits is 38880, while the sum is 36.

The spelling of 11532139344 in words is "eleven billion, five hundred thirty-two million, one hundred thirty-nine thousand, three hundred forty-four".