6420641112 has 24 divisors (see below), whose sum is σ = 17389236540. Its totient is φ = 2140213680.

The previous prime is 6420641111. The next prime is 6420641119. The reversal of 6420641112 is 2111460246.

6420641112 is a `hidden beast` number, since 6 + 4 + 2 + 0 + 641 + 1 + 12 = 666.

It is a tau number, because it is divible by the number of its divisors (24).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (6420641111) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 44587714 + ... + 44587857.

Almost surely, 2^6420641112 is an apocalyptic number.

It is an amenable number.

6420641112 is an abundant number, since it is smaller than the sum of its proper divisors (10968595428).

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

6420641112 is a wasteful number, since it uses less digits than its factorization.

6420641112 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 89175583 (or 89175576 counting only the distinct ones).

The product of its (nonzero) digits is 2304, while the sum is 27.

The square root of 6420641112 is about 80128.9030999427. The cubic root of 6420641112 is about 1858.6293822046.

The spelling of 6420641112 in words is "six billion, four hundred twenty million, six hundred forty-one thousand, one hundred twelve".