611243313642 has 256 divisors, whose sum is σ = 1581537484800. Its totient is φ = 173389559040.

The previous prime is 611243313641. The next prime is 611243313691. The reversal of 611243313642 is 246313342116.

611243313642 is a `hidden beast` number, since 6 + 1 + 1 + 2 + 4 + 3 + 3 + 1 + 3 + 642 = 666.

It is a junction number, because it is equal to n+sod(n) for n = 611243313597 and 611243313606.

It is not an unprimeable number, because it can be changed into a prime (611243313641) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 127 ways as a sum of consecutive naturals, for example, 113463673 + ... + 113469059.

It is an arithmetic number, because the mean of its divisors is an integer number (6177880800).

Almost surely, 2^611243313642 is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 611243313642, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (790768742400).

611243313642 is an abundant number, since it is smaller than the sum of its proper divisors (970294171158).

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

611243313642 is a wasteful number, since it uses less digits than its factorization.

611243313642 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5658 (or 5652 counting only the distinct ones).

The product of its digits is 62208, while the sum is 36.

Adding to 611243313642 its reverse (246313342116), we get a palindrome (857556655758).

The spelling of 611243313642 in words is "six hundred eleven billion, two hundred forty-three million, three hundred thirteen thousand, six hundred forty-two".