616353445663 has 16 divisors (see below), whose sum is σ = 660072330720. Its totient is φ = 573481216000.

The previous prime is 616353445661. The next prime is 616353445679. The reversal of 616353445663 is 366544353616.

It is a cyclic number.

It is not a de Polignac number, because 616353445663 - 2¹ = 616353445661 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 616353445663.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (616353445661) 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, 859143 + ... + 1403863.

It is an arithmetic number, because the mean of its divisors is an integer number (41254520670).

Almost surely, 2^616353445663 is an apocalyptic number.

616353445663 is a deficient number, since it is larger than the sum of its proper divisors (43718885057).

616353445663 is a wasteful number, since it uses less digits than its factorization.

616353445663 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 545498.

The product of its digits is 13996800, while the sum is 52.

The spelling of 616353445663 in words is "six hundred sixteen billion, three hundred fifty-three million, four hundred forty-five thousand, six hundred sixty-three".