643007114111 has 4 divisors (see below), whose sum is σ = 645397475400. Its totient is φ = 640616752824.

The previous prime is 643007114107. The next prime is 643007114179. The reversal of 643007114111 is 111411700346.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 643007114111 - 2² = 643007114107 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (643007114611) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1195180241 + ... + 1195180778.

It is an arithmetic number, because the mean of its divisors is an integer number (161349368850).

Almost surely, 2^643007114111 is an apocalyptic number.

643007114111 is a deficient number, since it is larger than the sum of its proper divisors (2390361289).

643007114111 is a wasteful number, since it uses less digits than its factorization.

643007114111 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2390361288.

The product of its (nonzero) digits is 2016, while the sum is 29.

Adding to 643007114111 its reverse (111411700346), we get a palindrome (754418814457).

The spelling of 643007114111 in words is "six hundred forty-three billion, seven million, one hundred fourteen thousand, one hundred eleven".