611232503220 has 192 divisors, whose sum is σ = 1942804362240. Its totient is φ = 159481460736.

The previous prime is 611232503209. The next prime is 611232503239. The reversal of 611232503220 is 22305232116.

It is a happy number.

611232503220 is a `hidden beast` number, since 6 + 1 + 12 + 325 + 0 + 322 + 0 = 666.

It is a Harshad number since it is a multiple of its sum of digits (27).

It is a congruent number.

It is an unprimeable number.

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 63 ways as a sum of consecutive naturals, for example, 10474444 + ... + 10532636.

It is an arithmetic number, because the mean of its divisors is an integer number (10118772720).

Almost surely, 2^611232503220 is an apocalyptic number.

611232503220 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 611232503220, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (971402181120).

611232503220 is an abundant number, since it is smaller than the sum of its proper divisors (1331571859020).

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

611232503220 is a wasteful number, since it uses less digits than its factorization.

611232503220 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 58631 (or 58623 counting only the distinct ones).

The product of its (nonzero) digits is 4320, while the sum is 27.

Adding to 611232503220 its reverse (22305232116), we get a palindrome (633537735336).

The spelling of 611232503220 in words is "six hundred eleven billion, two hundred thirty-two million, five hundred three thousand, two hundred twenty".