12351780446 has 8 divisors (see below), whose sum is σ = 18529603464. Its totient is φ = 6175245960.

The previous prime is 12351780443. The next prime is 12351780451. The reversal of 12351780446 is 64408715321.

12351780446 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 congruent number.

It is not an unprimeable number, because it can be changed into a prime (12351780443) 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 3 ways as a sum of consecutive naturals, for example, 297800 + ... + 336731.

It is an arithmetic number, because the mean of its divisors is an integer number (2316200433).

Almost surely, 2^12351780446 is an apocalyptic number.

12351780446 is a deficient number, since it is larger than the sum of its proper divisors (6177823018).

12351780446 is an equidigital number, since it uses as much as digits as its factorization.

12351780446 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 644266.

The product of its (nonzero) digits is 161280, while the sum is 41.

The spelling of 12351780446 in words is "twelve billion, three hundred fifty-one million, seven hundred eighty thousand, four hundred forty-six".