641167041611 has 4 divisors (see below), whose sum is σ = 674912675400. Its totient is φ = 607421407824.

The previous prime is 641167041589. The next prime is 641167041617. The reversal of 641167041611 is 116140761146.

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

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-641167041611 is a prime.

It is a super-3 number, since 3×641167041611³ (a number of 36 digits) contains 333 as substring. Note that it is a super-d number also for d = 2.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (641167041617) 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, 16872816866 + ... + 16872816903.

It is an arithmetic number, because the mean of its divisors is an integer number (168728168850).

Almost surely, 2^641167041611 is an apocalyptic number.

641167041611 is a deficient number, since it is larger than the sum of its proper divisors (33745633789).

641167041611 is a wasteful number, since it uses less digits than its factorization.

641167041611 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 33745633788.

The product of its (nonzero) digits is 24192, while the sum is 38.

The spelling of 641167041611 in words is "six hundred forty-one billion, one hundred sixty-seven million, forty-one thousand, six hundred eleven".