646243330011080 has 32 divisors (see below), whose sum is σ = 1454048216047800. Its totient is φ = 258497203378176.

The previous prime is 646243330011079. The next prime is 646243330011107. The reversal of 646243330011080 is 80110033342646.

It can be written as a sum of positive squares in 4 ways, for example, as 525849197685604 + 120394132325476 = 22931402^2 + 10972426^2 .

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 7 ways as a sum of consecutive naturals, for example, 157580006 + ... + 161629034.

Almost surely, 2^{646243330011080} is an apocalyptic number.

It is an amenable number.

646243330011080 is an abundant number, since it is smaller than the sum of its proper divisors (807804886036720).

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

646243330011080 is a wasteful number, since it uses less digits than its factorization.

646243330011080 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 8039153 (or 8039149 counting only the distinct ones).

The product of its (nonzero) digits is 248832, while the sum is 41.

The spelling of 646243330011080 in words is "six hundred forty-six trillion, two hundred forty-three billion, three hundred thirty million, eleven thousand, eighty".