645626304322 has 8 divisors (see below), whose sum is σ = 968603533056. Its totient is φ = 322758459972.

The previous prime is 645626304293. The next prime is 645626304329. The reversal of 645626304322 is 223403626546.

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

It is not an unprimeable number, because it can be changed into a prime (645626304329) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 27331338 + ... + 27354949.

It is an arithmetic number, because the mean of its divisors is an integer number (121075441632).

Almost surely, 2^645626304322 is an apocalyptic number.

645626304322 is a deficient number, since it is larger than the sum of its proper divisors (322977228734).

645626304322 is a wasteful number, since it uses less digits than its factorization.

645626304322 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 54692192.

The product of its (nonzero) digits is 1244160, while the sum is 43.

The spelling of 645626304322 in words is "six hundred forty-five billion, six hundred twenty-six million, three hundred four thousand, three hundred twenty-two".