646130064255 has 32 divisors (see below), whose sum is σ = 1118926502400. Its totient is φ = 316496315520.

The previous prime is 646130064199. The next prime is 646130064271. The reversal of 646130064255 is 552460031646.

It is not a de Polignac number, because 646130064255 - 2⁶ = 646130064191 is a prime.

It is a congruent number.

It is an unprimeable number.

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 31 ways as a sum of consecutive naturals, for example, 8286541 + ... + 8364150.

It is an arithmetic number, because the mean of its divisors is an integer number (34966453200).

Almost surely, 2^646130064255 is an apocalyptic number.

646130064255 is a gapful number since it is divisible by the number (65) formed by its first and last digit.

646130064255 is a deficient number, since it is larger than the sum of its proper divisors (472796438145).

646130064255 is a wasteful number, since it uses less digits than its factorization.

646130064255 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 16650911.

The product of its (nonzero) digits is 518400, while the sum is 42.

The spelling of 646130064255 in words is "six hundred forty-six billion, one hundred thirty million, sixty-four thousand, two hundred fifty-five".