646132333123 has 8 divisors (see below), whose sum is σ = 658308264768. Its totient is φ = 634046261184.

The previous prime is 646132333109. The next prime is 646132333127. The reversal of 646132333123 is 321333231646.

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

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-646132333123 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (646132333127) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 22450411 + ... + 22479172.

It is an arithmetic number, because the mean of its divisors is an integer number (82288533096).

Almost surely, 2^646132333123 is an apocalyptic number.

646132333123 is a deficient number, since it is larger than the sum of its proper divisors (12175931645).

646132333123 is a wasteful number, since it uses less digits than its factorization.

646132333123 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 44929853.

The product of its digits is 139968, while the sum is 37.

Adding to 646132333123 its reverse (321333231646), we get a palindrome (967465564769).

The spelling of 646132333123 in words is "six hundred forty-six billion, one hundred thirty-two million, three hundred thirty-three thousand, one hundred twenty-three".