643376450322 has 48 divisors (see below), whose sum is σ = 1467431615520. Its totient is φ = 203160182400.

The previous prime is 643376450317. The next prime is 643376450363. The reversal of 643376450322 is 223054673346.

643376450322 is a `hidden beast` number, since 64 + 3 + 3 + 7 + 64 + 503 + 22 = 666.

It is an unprimeable number.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 7811697 + ... + 7893627.

It is an arithmetic number, because the mean of its divisors is an integer number (30571491990).

Almost surely, 2^643376450322 is an apocalyptic number.

643376450322 is an abundant number, since it is smaller than the sum of its proper divisors (824055165198).

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

643376450322 is a wasteful number, since it uses less digits than its factorization.

643376450322 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 104919 (or 104916 counting only the distinct ones).

The product of its (nonzero) digits is 2177280, while the sum is 45.

The spelling of 643376450322 in words is "six hundred forty-three billion, three hundred seventy-six million, four hundred fifty thousand, three hundred twenty-two".