616325946809 has 4 divisors (see below), whose sum is σ = 616596148980. Its totient is φ = 616055744640.

The previous prime is 616325946781. The next prime is 616325946829. The reversal of 616325946809 is 908649523616.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 394157952400 + 222167994409 = 627820^2 + 471347^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-616325946809 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (616325946829) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 135097664 + ... + 135102225.

It is an arithmetic number, because the mean of its divisors is an integer number (154149037245).

Almost surely, 2^616325946809 is an apocalyptic number.

It is an amenable number.

616325946809 is a deficient number, since it is larger than the sum of its proper divisors (270202171).

616325946809 is a wasteful number, since it uses less digits than its factorization.

616325946809 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 270202170.

The product of its (nonzero) digits is 16796160, while the sum is 59.

The spelling of 616325946809 in words is "six hundred sixteen billion, three hundred twenty-five million, nine hundred forty-six thousand, eight hundred nine".