643130246634 has 8 divisors (see below), whose sum is σ = 1286260493280. Its totient is φ = 214376748876.

The previous prime is 643130246621. The next prime is 643130246639. The reversal of 643130246634 is 436642031346.

It is a happy number.

It is a sphenic number, since it is the product of 3 distinct primes.

643130246634 is an admirable number.

It is not an unprimeable number, because it can be changed into a prime (643130246639) 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, 53594187214 + ... + 53594187225.

It is an arithmetic number, because the mean of its divisors is an integer number (160782561660).

Almost surely, 2^643130246634 is an apocalyptic number.

643130246634 is a primitive abundant number, since it is smaller than the sum of its proper divisors, none of which is abundant.

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

643130246634 is a wasteful number, since it uses less digits than its factorization.

643130246634 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 107188374444.

The product of its (nonzero) digits is 746496, while the sum is 42.

The spelling of 643130246634 in words is "six hundred forty-three billion, one hundred thirty million, two hundred forty-six thousand, six hundred thirty-four".