643162343261346 has 64 divisors (see below), whose sum is σ = 1504594881600000. Its totient is φ = 203087486728656.

The previous prime is 643162343261299. The next prime is 643162343261419.

643162343261346 is a `hidden beast` number, since 6 + 4 + 3 + 1 + 6 + 2 + 34 + 3 + 261 + 346 = 666.

643162343261346 is nontrivially palindromic in base 10.

It is a Harshad number since it is a multiple of its sum of digits (54).

It is a junction number, because it is equal to n+sod(n) for n = 643162343261292 and 643162343261301.

It is an unprimeable number.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 12618796 + ... + 38020503.

It is an arithmetic number, because the mean of its divisors is an integer number (23509295025000).

Almost surely, 2^{643162343261346} is an apocalyptic number.

643162343261346 is an abundant number, since it is smaller than the sum of its proper divisors (861432538338654).

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

643162343261346 is a wasteful number, since it uses less digits than its factorization.

643162343261346 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 50651708 (or 50651702 counting only the distinct ones).

The product of its digits is 26873856, while the sum is 54.

The spelling of 643162343261346 in words is "six hundred forty-three trillion, one hundred sixty-two billion, three hundred forty-three million, two hundred sixty-one thousand, three hundred forty-six".