641068364647 has 8 divisors (see below), whose sum is σ = 642750580080. Its totient is φ = 639386905920.

The previous prime is 641068364551. The next prime is 641068364653. The reversal of 641068364647 is 746463860146.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-641068364647 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 (641068364147) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 1527804 + ... + 1901662.

It is an arithmetic number, because the mean of its divisors is an integer number (80343822510).

Almost surely, 2^641068364647 is an apocalyptic number.

641068364647 is a deficient number, since it is larger than the sum of its proper divisors (1682215433).

641068364647 is a wasteful number, since it uses less digits than its factorization.

641068364647 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 378353.

The product of its (nonzero) digits is 13934592, while the sum is 55.

The spelling of 641068364647 in words is "six hundred forty-one billion, sixty-eight million, three hundred sixty-four thousand, six hundred forty-seven".