12320145642 has 32 divisors (see below), whose sum is σ = 29642457600. Its totient is φ = 3334776048.

The previous prime is 12320145641. The next prime is 12320145647. The reversal of 12320145642 is 24654102321.

12320145642 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is not an unprimeable number, because it can be changed into a prime (12320145641) 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 15 ways as a sum of consecutive naturals, for example, 7718592 + ... + 7720187.

It is an arithmetic number, because the mean of its divisors is an integer number (926326800).

Almost surely, 2^12320145642 is an apocalyptic number.

12320145642 is an abundant number, since it is smaller than the sum of its proper divisors (17322311958).

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

12320145642 is a wasteful number, since it uses less digits than its factorization.

12320145642 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 15438810.

The product of its (nonzero) digits is 11520, while the sum is 30.

Adding to 12320145642 its reverse (24654102321), we get a palindrome (36974247963).

The spelling of 12320145642 in words is "twelve billion, three hundred twenty million, one hundred forty-five thousand, six hundred forty-two".