6420412905 has 16 divisors (see below), whose sum is σ = 10273855104. Its totient is φ = 3423822080.

The previous prime is 6420412903. The next prime is 6420412909. The reversal of 6420412905 is 5092140246.

6420412905 is digitally balanced in base 3, because in such base it contains all the possibile digits an equal number of times.

It is not a de Polignac number, because 6420412905 - 2¹ = 6420412903 is a prime.

It is not an unprimeable number, because it can be changed into a prime (6420412903) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 146500 + ... + 185210.

It is an arithmetic number, because the mean of its divisors is an integer number (642115944).

Almost surely, 2^6420412905 is an apocalyptic number.

It is an amenable number.

6420412905 is a deficient number, since it is larger than the sum of its proper divisors (3853442199).

6420412905 is a wasteful number, since it uses less digits than its factorization.

6420412905 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 49776.

The product of its (nonzero) digits is 17280, while the sum is 33.

The square root of 6420412905 is about 80127.4790880132. The cubic root of 6420412905 is about 1858.6073617006.

The spelling of 6420412905 in words is "six billion, four hundred twenty million, four hundred twelve thousand, nine hundred five".