616511445056 has 112 divisors (see below), whose sum is σ = 1353713385024. Its totient is φ = 276728887296.

The previous prime is 616511445001. The next prime is 616511445059. The reversal of 616511445056 is 650544115616.

It is a junction number, because it is equal to n+sod(n) for n = 616511444998 and 616511445016.

It is not an unprimeable number, because it can be changed into a prime (616511445059) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 123225851 + ... + 123230853.

It is an arithmetic number, because the mean of its divisors is an integer number (12086726652).

Almost surely, 2^616511445056 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 616511445056, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (676856692512).

616511445056 is an abundant number, since it is smaller than the sum of its proper divisors (737201939968).

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

616511445056 is a wasteful number, since it uses less digits than its factorization.

616511445056 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 9068 (or 9058 counting only the distinct ones).

The product of its (nonzero) digits is 432000, while the sum is 44.

The spelling of 616511445056 in words is "six hundred sixteen billion, five hundred eleven million, four hundred forty-five thousand, fifty-six".