645142243462322 has 8 divisors (see below), whose sum is σ = 967713754461696. Its totient is φ = 322570991975092.

The previous prime is 645142243462307. The next prime is 645142243462427. The reversal of 645142243462322 is 223264342241546.

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

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 58539218 + ... + 68681325.

It is an arithmetic number, because the mean of its divisors is an integer number (120964219307712).

Almost surely, 2^{645142243462322} is an apocalyptic number.

645142243462322 is a deficient number, since it is larger than the sum of its proper divisors (322571510999374).

645142243462322 is a wasteful number, since it uses less digits than its factorization.

645142243462322 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 129756072.

The product of its digits is 13271040, while the sum is 50.

The spelling of 645142243462322 in words is "six hundred forty-five trillion, one hundred forty-two billion, two hundred forty-three million, four hundred sixty-two thousand, three hundred twenty-two".