643133525331346 has 48 divisors (see below), whose sum is σ = 1161126707544000. Its totient is φ = 266072019930528.

The previous prime is 643133525331307. The next prime is 643133525331359.

643133525331346 is nontrivially palindromic in base 10.

It is a junction number, because it is equal to n+sod(n) for n = 643133525331293 and 643133525331302.

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, 7698886 + ... + 36681601.

It is an arithmetic number, because the mean of its divisors is an integer number (24190139740500).

Almost surely, 2^{643133525331346} is an apocalyptic number.

643133525331346 is a deficient number, since it is larger than the sum of its proper divisors (517993182212654).

643133525331346 is a wasteful number, since it uses less digits than its factorization.

643133525331346 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 44385631 (or 44385624 counting only the distinct ones).

The product of its digits is 20995200, while the sum is 52.

The spelling of 643133525331346 in words is "six hundred forty-three trillion, one hundred thirty-three billion, five hundred twenty-five million, three hundred thirty-one thousand, three hundred forty-six".