12240533345440 has 48 divisors (see below), whose sum is σ = 28919744583912. Its totient is φ = 4895961985024.

The previous prime is 12240533345423. The next prime is 12240533345473. The reversal of 12240533345440 is 4454333504221.

It can be written as a sum of positive squares in 4 ways, for example, as 11762128723216 + 478404622224 = 3429596^2 + 691668^2 .

It is a Harshad number since it is a multiple of its sum of digits (40).

It is a junction number, because it is equal to n+sod(n) for n = 12240533345393 and 12240533345402.

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, 1178412 + ... + 5086228.

Almost surely, 2^{12240533345440} is an apocalyptic number.

12240533345440 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

12240533345440 is an abundant number, since it is smaller than the sum of its proper divisors (16679211238472).

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

12240533345440 is a wasteful number, since it uses less digits than its factorization.

12240533345440 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3927409 (or 3927401 counting only the distinct ones).

The product of its (nonzero) digits is 691200, while the sum is 40.

Adding to 12240533345440 its reverse (4454333504221), we get a palindrome (16694866849661).

The spelling of 12240533345440 in words is "twelve trillion, two hundred forty billion, five hundred thirty-three million, three hundred forty-five thousand, four hundred forty".