645595101595546 has 8 divisors (see below), whose sum is σ = 999631125051264. Its totient is φ = 312384726578460.

The previous prime is 645595101595529. The next prime is 645595101595571.

645595101595546 is nontrivially palindromic in base 10.

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

It is a super-2 number, since 2×645595101595546² (a number of 30 digits) contains 22 as substring.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 5206412109580 + ... + 5206412109703.

It is an arithmetic number, because the mean of its divisors is an integer number (124953890631408).

Almost surely, 2^{645595101595546} is an apocalyptic number.

645595101595546 is a deficient number, since it is larger than the sum of its proper divisors (354036023455718).

645595101595546 is a wasteful number, since it uses less digits than its factorization.

645595101595546 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 10412824219316.

The product of its (nonzero) digits is 729000000, while the sum is 70.

The spelling of 645595101595546 in words is "six hundred forty-five trillion, five hundred ninety-five billion, one hundred one million, five hundred ninety-five thousand, five hundred forty-six".