616661049185 has 48 divisors (see below), whose sum is σ = 768732322176. Its totient is φ = 474803427072.

The previous prime is 616661049163. The next prime is 616661049187. The reversal of 616661049185 is 581940166616.

It is not a de Polignac number, because 616661049185 - 2¹⁰ = 616661048161 is a prime.

It is a super-3 number, since 3×616661049185³ (a number of 36 digits) contains 333 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (616661049187) 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, 213597812 + ... + 213600698.

It is an arithmetic number, because the mean of its divisors is an integer number (16015256712).

Almost surely, 2^616661049185 is an apocalyptic number.

It is an amenable number.

616661049185 is a deficient number, since it is larger than the sum of its proper divisors (152071272991).

616661049185 is a wasteful number, since it uses less digits than its factorization.

616661049185 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3302 (or 3255 counting only the distinct ones).

The product of its (nonzero) digits is 1866240, while the sum is 53.

The spelling of 616661049185 in words is "six hundred sixteen billion, six hundred sixty-one million, forty-nine thousand, one hundred eighty-five".