616247779806 has 96 divisors (see below), whose sum is σ = 1410293539200. Its totient is φ = 193938960960.

The previous prime is 616247779801. The next prime is 616247779841. The reversal of 616247779806 is 608977742616.

616247779806 is a `hidden beast` number, since 6 + 16 + 2 + 477 + 79 + 80 + 6 = 666.

It is a super-2 number, since 2×616247779806² (a number of 24 digits) contains 22 as substring.

It is a Smith number, since the sum of its digits (63) coincides with the sum of the digits of its prime factors.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (616247779801) by changing a digit.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 136729005 + ... + 136733511.

It is an arithmetic number, because the mean of its divisors is an integer number (14690557700).

Almost surely, 2^616247779806 is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 616247779806, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (705146769600).

616247779806 is an abundant number, since it is smaller than the sum of its proper divisors (794045759394).

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

616247779806 is a wasteful number, since it uses less digits than its factorization.

616247779806 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5814 (or 5811 counting only the distinct ones).

The product of its (nonzero) digits is 42674688, while the sum is 63.

The spelling of 616247779806 in words is "six hundred sixteen billion, two hundred forty-seven million, seven hundred seventy-nine thousand, eight hundred six".