646243330011063 has 4 divisors (see below), whose sum is σ = 861657773348088. Its totient is φ = 430828886674040.

The previous prime is 646243330011049. The next prime is 646243330011079. The reversal of 646243330011063 is 360110033342646.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 646243330011063 - 2⁵ = 646243330011031 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (646243330011023) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 107707221668508 + ... + 107707221668513.

It is an arithmetic number, because the mean of its divisors is an integer number (215414443337022).

Almost surely, 2^{646243330011063} is an apocalyptic number.

646243330011063 is a deficient number, since it is larger than the sum of its proper divisors (215414443337025).

646243330011063 is a wasteful number, since it uses less digits than its factorization.

646243330011063 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 215414443337024.

The product of its (nonzero) digits is 559872, while the sum is 42.

The spelling of 646243330011063 in words is "six hundred forty-six trillion, two hundred forty-three billion, three hundred thirty million, eleven thousand, sixty-three".