616207767656 has 64 divisors (see below), whose sum is σ = 1300698000000. Its totient is φ = 271549225728.

The previous prime is 616207767599. The next prime is 616207767697. The reversal of 616207767656 is 656767702616.

It is a junction number, because it is equal to n+sod(n) for n = 616207767595 and 616207767604.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 1101095 + ... + 1563593.

It is an arithmetic number, because the mean of its divisors is an integer number (20323406250).

Almost surely, 2^616207767656 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 616207767656, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (650349000000).

616207767656 is an abundant number, since it is smaller than the sum of its proper divisors (684490232344).

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

616207767656 is a wasteful number, since it uses less digits than its factorization.

616207767656 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 463098 (or 463094 counting only the distinct ones).

The product of its (nonzero) digits is 26671680, while the sum is 59.

The spelling of 616207767656 in words is "six hundred sixteen billion, two hundred seven million, seven hundred sixty-seven thousand, six hundred fifty-six".