12452780561 has 8 divisors (see below), whose sum is σ = 13439409984. Its totient is φ = 11470254480.

The previous prime is 12452780539. The next prime is 12452780579. The reversal of 12452780561 is 16508725421.

12452780561 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-12452780561 is a prime.

It is not an unprimeable number, because it can be changed into a prime (12452780591) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 1019525 + ... + 1031666.

It is an arithmetic number, because the mean of its divisors is an integer number (1679926248).

Almost surely, 2^12452780561 is an apocalyptic number.

It is an amenable number.

12452780561 is a deficient number, since it is larger than the sum of its proper divisors (986629423).

12452780561 is a wasteful number, since it uses less digits than its factorization.

12452780561 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2051671.

The product of its (nonzero) digits is 134400, while the sum is 41.

The spelling of 12452780561 in words is "twelve billion, four hundred fifty-two million, seven hundred eighty thousand, five hundred sixty-one".