643140303041307 has 48 divisors (see below), whose sum is σ = 915939589373952. Its totient is φ = 401323297455360.

The previous prime is 643140303041293. The next prime is 643140303041333. The reversal of 643140303041307 is 703140303041346.

It is not a de Polignac number, because 643140303041307 - 2¹¹ = 643140303039259 is a prime.

It is not an unprimeable number, because it can be changed into a prime (643140303041107) by changing a digit.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 23446158 + ... + 42848604.

It is an arithmetic number, because the mean of its divisors is an integer number (19082074778624).

Almost surely, 2^{643140303041307} is an apocalyptic number.

643140303041307 is a deficient number, since it is larger than the sum of its proper divisors (272799286332645).

643140303041307 is a wasteful number, since it uses less digits than its factorization.

643140303041307 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 19402856 (or 19402837 counting only the distinct ones).

The product of its (nonzero) digits is 217728, while the sum is 39.

Adding to 643140303041307 its sum of digits (39), we get a palindrome (643140303041346).

The spelling of 643140303041307 in words is "six hundred forty-three trillion, one hundred forty billion, three hundred three million, forty-one thousand, three hundred seven".