641165610067 has 2 divisors, whose sum is σ = 641165610068. Its totient is φ = 641165610066.

The previous prime is 641165610049. The next prime is 641165610079. The reversal of 641165610067 is 760016561146.

It is a strong prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-641165610067 is a prime.

It is a super-2 number, since 2×641165610067² (a number of 24 digits) contains 22 as substring.

It is not a weakly prime, because it can be changed into another prime (641165610017) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 320582805033 + 320582805034.

It is an arithmetic number, because the mean of its divisors is an integer number (320582805034).

Almost surely, 2^641165610067 is an apocalyptic number.

641165610067 is a deficient number, since it is larger than the sum of its proper divisors (1).

641165610067 is an equidigital number, since it uses as much as digits as its factorization.

641165610067 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 181440, while the sum is 43.

The spelling of 641165610067 in words is "six hundred forty-one billion, one hundred sixty-five million, six hundred ten thousand, sixty-seven".