616230664920 has 256 divisors, whose sum is σ = 2229534720000. Its totient is φ = 150492722688.

The previous prime is 616230664913. The next prime is 616230664943. The reversal of 616230664920 is 29466032616.

616230664920 is a `hidden beast` number, since 616 + 2 + 3 + 0 + 6 + 6 + 4 + 9 + 20 = 666.

It is a super-3 number, since 3×616230664920³ (a number of 36 digits) contains 333 as substring.

It is a Harshad number since it is a multiple of its sum of digits (45).

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 63 ways as a sum of consecutive naturals, for example, 1610281 + ... + 1955879.

It is an arithmetic number, because the mean of its divisors is an integer number (8709120000).

Almost surely, 2^616230664920 is an apocalyptic number.

616230664920 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 616230664920, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (1114767360000).

616230664920 is an abundant number, since it is smaller than the sum of its proper divisors (1613304055080).

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

616230664920 is a wasteful number, since it uses less digits than its factorization.

616230664920 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 345759 (or 345749 counting only the distinct ones).

The product of its (nonzero) digits is 559872, while the sum is 45.

It can be divided in two parts, 6162306 and 64920, that added together give a palindrome (6227226).

The spelling of 616230664920 in words is "six hundred sixteen billion, two hundred thirty million, six hundred sixty-four thousand, nine hundred twenty".