12533440040 has 64 divisors (see below), whose sum is σ = 30775541760. Its totient is φ = 4555889920.

The previous prime is 12533439973. The next prime is 12533440057. The reversal of 12533440040 is 4004433521.

It is a junction number, because it is equal to n+sod(n) for n = 12533439991 and 12533440009.

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, 2037209 + ... + 2043351.

It is an arithmetic number, because the mean of its divisors is an integer number (480867840).

Almost surely, 2^12533440040 is an apocalyptic number.

12533440040 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

12533440040 is an abundant number, since it is smaller than the sum of its proper divisors (18242101720).

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

12533440040 is a wasteful number, since it uses less digits than its factorization.

12533440040 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 10802 (or 10798 counting only the distinct ones).

The product of its (nonzero) digits is 5760, while the sum is 26.

Adding to 12533440040 its reverse (4004433521), we get a palindrome (16537873561).

The spelling of 12533440040 in words is "twelve billion, five hundred thirty-three million, four hundred forty thousand, forty".