20120306450305 has 16 divisors (see below), whose sum is σ = 24227273871360. Its totient is φ = 16040976685888.

The previous prime is 20120306450303. The next prime is 20120306450347. The reversal of 20120306450305 is 50305460302102.

It is a happy number.

20120306450305 is digitally balanced in base 6, because in such base it contains all the possibile digits an equal number of times.

It is a cyclic number.

It is not a de Polignac number, because 20120306450305 - 2¹ = 20120306450303 is a prime.

It is not an unprimeable number, because it can be changed into a prime (20120306450303) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 90072384 + ... + 90295486.

It is an arithmetic number, because the mean of its divisors is an integer number (1514204616960).

Almost surely, 2^{20120306450305} is an apocalyptic number.

It is an amenable number.

20120306450305 is a deficient number, since it is larger than the sum of its proper divisors (4106967421055).

20120306450305 is a wasteful number, since it uses less digits than its factorization.

20120306450305 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 284960.

The product of its (nonzero) digits is 21600, while the sum is 31.

Adding to 20120306450305 its reverse (50305460302102), we get a palindrome (70425766752407).

The spelling of 20120306450305 in words is "twenty trillion, one hundred twenty billion, three hundred six million, four hundred fifty thousand, three hundred five".