646869308382 has 36 divisors (see below), whose sum is σ = 1540546884240. Its totient is φ = 196021001880.

The previous prime is 646869308377. The next prime is 646869308383. The reversal of 646869308382 is 283803968646.

646869308382 is a `hidden beast` number, since 6 + 468 + 6 + 93 + 0 + 8 + 3 + 82 = 666.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (646869308383) by changing a digit.

It is a polite number, since it can be written in 17 ways as a sum of consecutive naturals, for example, 148498582 + ... + 148502937.

Almost surely, 2^646869308382 is an apocalyptic number.

646869308382 is an abundant number, since it is smaller than the sum of its proper divisors (893677575858).

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

646869308382 is a wasteful number, since it uses less digits than its factorization.

646869308382 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 297001549 (or 297001535 counting only the distinct ones).

The product of its (nonzero) digits is 71663616, while the sum is 63.

The spelling of 646869308382 in words is "six hundred forty-six billion, eight hundred sixty-nine million, three hundred eight thousand, three hundred eighty-two".