6643426340130 has 64 divisors (see below), whose sum is σ = 15975040606848. Its totient is φ = 1768159457280.

The previous prime is 6643426340113. The next prime is 6643426340141. The reversal of 6643426340130 is 310436243466.

It is a happy number.

It is a super-2 number, since 2×6643426340130² (a number of 26 digits) contains 22 as substring.

It is a Curzon number.

It is an unprimeable number.

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 31 ways as a sum of consecutive naturals, for example, 32905090 + ... + 33106370.

It is an arithmetic number, because the mean of its divisors is an integer number (249610009482).

Almost surely, 2^{6643426340130} is an apocalyptic number.

6643426340130 is an abundant number, since it is smaller than the sum of its proper divisors (9331614266718).

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

6643426340130 is a wasteful number, since it uses less digits than its factorization.

6643426340130 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 203411.

The product of its (nonzero) digits is 746496, while the sum is 42.

The spelling of 6643426340130 in words is "six trillion, six hundred forty-three billion, four hundred twenty-six million, three hundred forty thousand, one hundred thirty".