643030436132 has 48 divisors (see below), whose sum is σ = 1311442664448. Its totient is φ = 270184511520.

The previous prime is 643030436089. The next prime is 643030436171. The reversal of 643030436132 is 231634030346.

643030436132 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a super-2 number, since 2×643030436132² (a number of 24 digits) contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 643030436092 and 643030436101.

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, 416408 + ... + 1208079.

It is an arithmetic number, because the mean of its divisors is an integer number (27321722176).

Almost surely, 2^643030436132 is an apocalyptic number.

It is an amenable number.

643030436132 is an abundant number, since it is smaller than the sum of its proper divisors (668412228316).

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

643030436132 is a wasteful number, since it uses less digits than its factorization.

643030436132 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1624776 (or 1624774 counting only the distinct ones).

The product of its (nonzero) digits is 93312, while the sum is 35.

Adding to 643030436132 its reverse (231634030346), we get a palindrome (874664466478).

The spelling of 643030436132 in words is "six hundred forty-three billion, thirty million, four hundred thirty-six thousand, one hundred thirty-two".