643331741596 has 6 divisors (see below), whose sum is σ = 1125830547800. Its totient is φ = 321665870796.

The previous prime is 643331741539. The next prime is 643331741597. The reversal of 643331741596 is 695147133346.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (643331741597) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 80416467696 + ... + 80416467703.

Almost surely, 2^643331741596 is an apocalyptic number.

It is an amenable number.

643331741596 is a deficient number, since it is larger than the sum of its proper divisors (482498806204).

643331741596 is a wasteful number, since it uses less digits than its factorization.

643331741596 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 160832935403 (or 160832935401 counting only the distinct ones).

The product of its digits is 4898880, while the sum is 52.

The spelling of 643331741596 in words is "six hundred forty-three billion, three hundred thirty-one million, seven hundred forty-one thousand, five hundred ninety-six".