645141302217 has 12 divisors (see below), whose sum is σ = 931961631744. Its totient is φ = 430052265240.

The previous prime is 645141302161. The next prime is 645141302227. The reversal of 645141302217 is 712203141546.

645141302217 is a `hidden beast` number, since 6 + 4 + 514 + 130 + 2 + 2 + 1 + 7 = 666.

645141302217 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is not a de Polignac number, because 645141302217 - 2⁷ = 645141302089 is a prime.

It is not an unprimeable number, because it can be changed into a prime (645141302227) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 3397113 + ... + 3581990.

It is an arithmetic number, because the mean of its divisors is an integer number (77663469312).

Almost surely, 2^645141302217 is an apocalyptic number.

It is an amenable number.

645141302217 is a deficient number, since it is larger than the sum of its proper divisors (286820329527).

645141302217 is a wasteful number, since it uses less digits than its factorization.

645141302217 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 6989380 (or 6989377 counting only the distinct ones).

The product of its (nonzero) digits is 40320, while the sum is 36.

The spelling of 645141302217 in words is "six hundred forty-five billion, one hundred forty-one million, three hundred two thousand, two hundred seventeen".