645066244114 has 4 divisors (see below), whose sum is σ = 967599366174. Its totient is φ = 322533122056.

The previous prime is 645066244073. The next prime is 645066244117. The reversal of 645066244114 is 411442660546.

It is a happy number.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in only one way, i.e., 421778808025 + 223287436089 = 649445^2 + 472533^2 .

It is a super-3 number, since 3×645066244114³ (a number of 36 digits) contains 333 as substring. Note that it is a super-d number also for d = 2.

It is not an unprimeable number, because it can be changed into a prime (645066244117) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 161266561027 + ... + 161266561030.

Almost surely, 2^645066244114 is an apocalyptic number.

645066244114 is a deficient number, since it is larger than the sum of its proper divisors (322533122060).

645066244114 is a wasteful number, since it uses less digits than its factorization.

645066244114 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 322533122059.

The product of its (nonzero) digits is 552960, while the sum is 43.

The spelling of 645066244114 in words is "six hundred forty-five billion, sixty-six million, two hundred forty-four thousand, one hundred fourteen".