646430405304 has 32 divisors (see below), whose sum is σ = 1626922170000. Its totient is φ = 214030647552.

The previous prime is 646430405261. The next prime is 646430405321. The reversal of 646430405304 is 403504034646.

It is a super-2 number, since 2×646430405304² (a number of 24 digits) contains 22 as substring.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 90380989 + ... + 90388140.

Almost surely, 2^646430405304 is an apocalyptic number.

It is an amenable number.

646430405304 is an abundant number, since it is smaller than the sum of its proper divisors (980491764696).

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

646430405304 is a wasteful number, since it uses less digits than its factorization.

646430405304 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 180769287 (or 180769283 counting only the distinct ones).

The product of its (nonzero) digits is 414720, while the sum is 39.

The spelling of 646430405304 in words is "six hundred forty-six billion, four hundred thirty million, four hundred five thousand, three hundred four".