645302326345651 has 8 divisors (see below), whose sum is σ = 694942085764080. Its totient is φ = 595662726774432.

The previous prime is 645302326345627. The next prime is 645302326345681. The reversal of 645302326345651 is 156543623203546.

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

It is a cyclic number.

It is not a de Polignac number, because 645302326345651 - 2³⁵ = 645267966607283 is a prime.

It is a super-2 number, since 2×645302326345651² (a number of 30 digits) contains 22 as substring.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 645302326345592 and 645302326345601.

It is not an unprimeable number, because it can be changed into a prime (645302326345681) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (31) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 31511080 + ... + 47786533.

It is an arithmetic number, because the mean of its divisors is an integer number (86867760720510).

Almost surely, 2^{645302326345651} is an apocalyptic number.

645302326345651 is a deficient number, since it is larger than the sum of its proper divisors (49639759418429).

645302326345651 is a wasteful number, since it uses less digits than its factorization.

645302326345651 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 79923605.

The product of its (nonzero) digits is 46656000, while the sum is 55.

The spelling of 645302326345651 in words is "six hundred forty-five trillion, three hundred two billion, three hundred twenty-six million, three hundred forty-five thousand, six hundred fifty-one".