645611241122 has 8 divisors (see below), whose sum is σ = 968743046700. Its totient is φ = 322696892224.

The previous prime is 645611241109. The next prime is 645611241137. The reversal of 645611241122 is 221142116546.

It can be written as a sum of positive squares in 2 ways, for example, as 626597313241 + 19013927881 = 791579^2 + 137891^2 .

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, 54356747 + ... + 54368622.

Almost surely, 2^645611241122 is an apocalyptic number.

645611241122 is a deficient number, since it is larger than the sum of its proper divisors (323131805578).

645611241122 is a wasteful number, since it uses less digits than its factorization.

645611241122 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 108728340.

The product of its digits is 23040, while the sum is 35.

Adding to 645611241122 its reverse (221142116546), we get a palindrome (866753357668).

The spelling of 645611241122 in words is "six hundred forty-five billion, six hundred eleven million, two hundred forty-one thousand, one hundred twenty-two".