611311230660 has 192 divisors, whose sum is σ = 1856242241280. Its totient is φ = 149425674240.

The previous prime is 611311230619. The next prime is 611311230667. The reversal of 611311230660 is 66032113116.

It is a Harshad number since it is a multiple of its sum of digits (30).

It is not an unprimeable number, because it can be changed into a prime (611311230667) by changing a digit.

It is a polite number, since it can be written in 63 ways as a sum of consecutive naturals, for example, 114625354 + ... + 114630686.

It is an arithmetic number, because the mean of its divisors is an integer number (9667928340).

Almost surely, 2^611311230660 is an apocalyptic number.

611311230660 is a gapful number since it is divisible by the number (60) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 611311230660, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (928121120640).

611311230660 is an abundant number, since it is smaller than the sum of its proper divisors (1244931010620).

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

611311230660 is a wasteful number, since it uses less digits than its factorization.

611311230660 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 6358 (or 6356 counting only the distinct ones).

The product of its (nonzero) digits is 3888, while the sum is 30.

Adding to 611311230660 its reverse (66032113116), we get a palindrome (677343343776).

The spelling of 611311230660 in words is "six hundred eleven billion, three hundred eleven million, two hundred thirty thousand, six hundred sixty".