643133004542412 has 48 divisors (see below), whose sum is σ = 1527716427411552. Its totient is φ = 210521524308480.

The previous prime is 643133004542321. The next prime is 643133004542419. The reversal of 643133004542412 is 214245400331346.

It is not an unprimeable number, because it can be changed into a prime (643133004542419) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 711539443 + ... + 712442730.

It is an arithmetic number, because the mean of its divisors is an integer number (31827425571074).

Almost surely, 2^{643133004542412} is an apocalyptic number.

It is an amenable number.

643133004542412 is an abundant number, since it is smaller than the sum of its proper divisors (884583422869140).

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

643133004542412 is a wasteful number, since it uses less digits than its factorization.

643133004542412 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1423982858 (or 1423982856 counting only the distinct ones).

The product of its (nonzero) digits is 829440, while the sum is 42.

Adding to 643133004542412 its reverse (214245400331346), we get a palindrome (857378404873758).

The spelling of 643133004542412 in words is "six hundred forty-three trillion, one hundred thirty-three billion, four million, five hundred forty-two thousand, four hundred twelve".