616559188449 has 32 divisors (see below), whose sum is σ = 861560008704. Its totient is φ = 391708088640.

The previous prime is 616559188397. The next prime is 616559188489. The reversal of 616559188449 is 944881955616.

It is a happy number.

It is not a de Polignac number, because 616559188449 - 2¹⁷ = 616559057377 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 616559188449.

It is not an unprimeable number, because it can be changed into a prime (616559188489) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 19942447 + ... + 19973339.

It is an arithmetic number, because the mean of its divisors is an integer number (26923750272).

Almost surely, 2^616559188449 is an apocalyptic number.

It is an amenable number.

616559188449 is a deficient number, since it is larger than the sum of its proper divisors (245000820255).

616559188449 is a wasteful number, since it uses less digits than its factorization.

616559188449 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 34197.

The product of its digits is 74649600, while the sum is 66.

The spelling of 616559188449 in words is "six hundred sixteen billion, five hundred fifty-nine million, one hundred eighty-eight thousand, four hundred forty-nine".