616775059656 has 128 divisors (see below), whose sum is σ = 1960037222400. Its totient is φ = 176039542080.

The previous prime is 616775059639. The next prime is 616775059661. The reversal of 616775059656 is 656950577616.

616775059656 is a `hidden beast` number, since 6 + 1 + 6 + 77 + 505 + 9 + 6 + 56 = 666.

It is a super-2 number, since 2×616775059656² (a number of 24 digits) contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (63).

It is a junction number, because it is equal to n+sod(n) for n = 616775059593 and 616775059602.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 1258101 + ... + 1678203.

It is an arithmetic number, because the mean of its divisors is an integer number (15312790800).

Almost surely, 2^616775059656 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 616775059656, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (980018611200).

616775059656 is an abundant number, since it is smaller than the sum of its proper divisors (1343262162744).

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

616775059656 is a wasteful number, since it uses less digits than its factorization.

616775059656 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 421096 (or 421086 counting only the distinct ones).

The product of its (nonzero) digits is 71442000, while the sum is 63.

The spelling of 616775059656 in words is "six hundred sixteen billion, seven hundred seventy-five million, fifty-nine thousand, six hundred fifty-six".