646263146335122 has 80 divisors (see below), whose sum is σ = 1475542427401152. Its totient is φ = 211340532443040.

The previous prime is 646263146335087. The next prime is 646263146335129. The reversal of 646263146335122 is 221533641362646.

646263146335122 is a `hidden beast` number, since 6 + 4 + 6 + 2 + 63 + 1 + 4 + 63 + 3 + 512 + 2 = 666.

646263146335122 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a Harshad number since it is a multiple of its sum of digits (54).

It is not an unprimeable number, because it can be changed into a prime (646263146335129) by changing a digit.

It is a polite number, since it can be written in 39 ways as a sum of consecutive naturals, for example, 111073747 + ... + 116747177.

Almost surely, 2^{646263146335122} is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 646263146335122, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (737771213700576).

646263146335122 is an abundant number, since it is smaller than the sum of its proper divisors (829279281066030).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

646263146335122 is a wasteful number, since it uses less digits than its factorization.

646263146335122 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5686765 (or 5686756 counting only the distinct ones).

The product of its digits is 22394880, while the sum is 54.

Adding to 646263146335122 its reverse (221533641362646), we get a palindrome (867796787697768).

The spelling of 646263146335122 in words is "six hundred forty-six trillion, two hundred sixty-three billion, one hundred forty-six million, three hundred thirty-five thousand, one hundred twenty-two".