641342306291 has 2 divisors, whose sum is σ = 641342306292. Its totient is φ = 641342306290.

The previous prime is 641342306273. The next prime is 641342306441. The reversal of 641342306291 is 192603243146.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 641342306291 - 2²⁶ = 641275197427 is a prime.

It is a super-2 number, since 2×641342306291² (a number of 24 digits) contains 22 as substring.

It is not a weakly prime, because it can be changed into another prime (641342306251) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 320671153145 + 320671153146.

It is an arithmetic number, because the mean of its divisors is an integer number (320671153146).

Almost surely, 2^641342306291 is an apocalyptic number.

641342306291 is a deficient number, since it is larger than the sum of its proper divisors (1).

641342306291 is an equidigital number, since it uses as much as digits as its factorization.

641342306291 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 186624, while the sum is 41.

The spelling of 641342306291 in words is "six hundred forty-one billion, three hundred forty-two million, three hundred six thousand, two hundred ninety-one".