616226681616 has 320 divisors, whose sum is σ = 1988992696320. Its totient is φ = 160063672320.

The previous prime is 616226681597. The next prime is 616226681641. The reversal of 616226681616 is 616186622616.

It is a happy number.

It is a nude number because it is divisible by every one of its digits.

It is an unprimeable number.

It is a polite number, since it can be written in 63 ways as a sum of consecutive naturals, for example, 407826301 + ... + 407827811.

It is an arithmetic number, because the mean of its divisors is an integer number (6215602176).

Almost surely, 2^616226681616 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 616226681616, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (994496348160).

616226681616 is an abundant number, since it is smaller than the sum of its proper divisors (1372766014704).

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

616226681616 is a wasteful number, since it uses less digits than its factorization.

616226681616 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2894 (or 2888 counting only the distinct ones).

The product of its digits is 1492992, while the sum is 51.

The spelling of 616226681616 in words is "six hundred sixteen billion, two hundred twenty-six million, six hundred eighty-one thousand, six hundred sixteen".