645113332022 has 32 divisors (see below), whose sum is σ = 981135072000. Its totient is φ = 318101580000.

The previous prime is 645113332007. The next prime is 645113332079. The reversal of 645113332022 is 220233311546.

It is a super-2 number, since 2×645113332022² (a number of 24 digits) contains 22 as substring.

It is a self number, because there is not a number n which added to its sum of digits gives 645113332022.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 159245897 + ... + 159249947.

It is an arithmetic number, because the mean of its divisors is an integer number (30660471000).

Almost surely, 2^645113332022 is an apocalyptic number.

645113332022 is a deficient number, since it is larger than the sum of its proper divisors (336021739978).

645113332022 is a wasteful number, since it uses less digits than its factorization.

645113332022 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 7892.

The product of its (nonzero) digits is 25920, while the sum is 32.

Adding to 645113332022 its reverse (220233311546), we get a palindrome (865346643568).

The spelling of 645113332022 in words is "six hundred forty-five billion, one hundred thirteen million, three hundred thirty-two thousand, twenty-two".