616650565500 has 288 divisors, whose sum is σ = 2031798525120. Its totient is φ = 157281523200.

The previous prime is 616650565483. The next prime is 616650565501. The reversal of 616650565500 is 5565056616.

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

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (616650565501) by changing a digit.

It is a polite number, since it can be written in 95 ways as a sum of consecutive naturals, for example, 9792114 + ... + 9854886.

It is an arithmetic number, because the mean of its divisors is an integer number (7054855990).

Almost surely, 2^616650565500 is an apocalyptic number.

616650565500 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 616650565500, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (1015899262560).

616650565500 is an abundant number, since it is smaller than the sum of its proper divisors (1415147959620).

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

616650565500 is a wasteful number, since it uses less digits than its factorization.

616650565500 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 62894 (or 62879 counting only the distinct ones).

The product of its (nonzero) digits is 810000, while the sum is 45.

The spelling of 616650565500 in words is "six hundred sixteen billion, six hundred fifty million, five hundred sixty-five thousand, five hundred".