12535332440 has 64 divisors (see below), whose sum is σ = 28418549760. Its totient is φ = 4976173440.

The previous prime is 12535332431. The next prime is 12535332451. The reversal of 12535332440 is 4423353521.

It is a junction number, because it is equal to n+sod(n) for n = 12535332397 and 12535332406.

It is a congruent number.

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, 8520905 + ... + 8522375.

It is an arithmetic number, because the mean of its divisors is an integer number (444039840).

Almost surely, 2^12535332440 is an apocalyptic number.

12535332440 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

12535332440 is an abundant number, since it is smaller than the sum of its proper divisors (15883217320).

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

12535332440 is a wasteful number, since it uses less digits than its factorization.

12535332440 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2952 (or 2948 counting only the distinct ones).

The product of its (nonzero) digits is 43200, while the sum is 32.

Adding to 12535332440 its reverse (4423353521), we get a palindrome (16958685961).

The spelling of 12535332440 in words is "twelve billion, five hundred thirty-five million, three hundred thirty-two thousand, four hundred forty".