646132364016 has 40 divisors (see below), whose sum is σ = 1669569380304. Its totient is φ = 215326602240.

The previous prime is 646132364011. The next prime is 646132364027. The reversal of 646132364016 is 610463231646.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (646132364011) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 1383451 + ... + 1790586.

Almost surely, 2^646132364016 is an apocalyptic number.

It is an amenable number.

646132364016 is an abundant number, since it is smaller than the sum of its proper divisors (1023437016288).

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

646132364016 is a wasteful number, since it uses less digits than its factorization.

646132364016 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3178289 (or 3178283 counting only the distinct ones).

The product of its (nonzero) digits is 373248, while the sum is 42.

The spelling of 646132364016 in words is "six hundred forty-six billion, one hundred thirty-two million, three hundred sixty-four thousand, sixteen".