12780411353442 has 128 divisors (see below), whose sum is σ = 30218164807680. Its totient is φ = 3996802103040.

The previous prime is 12780411353429. The next prime is 12780411353449. The reversal of 12780411353442 is 24435311408721.

12780411353442 is a `hidden beast` number, since 1 + 2 + 78 + 0 + 4 + 1 + 1 + 3 + 534 + 42 = 666.

It is not an unprimeable number, because it can be changed into a prime (12780411353449) by changing a digit.

It is a polite number, since it can be written in 63 ways as a sum of consecutive naturals, for example, 16784368 + ... + 17529284.

It is an arithmetic number, because the mean of its divisors is an integer number (236079412560).

Almost surely, 2^{12780411353442} is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 12780411353442, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (15109082403840).

12780411353442 is an abundant number, since it is smaller than the sum of its proper divisors (17437753454238).

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

12780411353442 is a wasteful number, since it uses less digits than its factorization.

12780411353442 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 745273 (or 745267 counting only the distinct ones).

The product of its (nonzero) digits is 645120, while the sum is 45.

The spelling of 12780411353442 in words is "twelve trillion, seven hundred eighty billion, four hundred eleven million, three hundred fifty-three thousand, four hundred forty-two".