643032841116 has 48 divisors (see below), whose sum is σ = 1505933410688. Its totient is φ = 213555441600.

The previous prime is 643032841103. The next prime is 643032841133. The reversal of 643032841116 is 611148230346.

It is a happy number.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 39830406 + ... + 39846546.

Almost surely, 2^643032841116 is an apocalyptic number.

It is an amenable number.

643032841116 is an abundant number, since it is smaller than the sum of its proper divisors (862900569572).

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

643032841116 is a wasteful number, since it uses less digits than its factorization.

643032841116 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 28162 (or 28160 counting only the distinct ones).

The product of its (nonzero) digits is 82944, while the sum is 39.

The spelling of 643032841116 in words is "six hundred forty-three billion, thirty-two million, eight hundred forty-one thousand, one hundred sixteen".