616127663844 has 243 divisors, whose sum is σ = 1992555099171. Its totient is φ = 159938966880.

The previous prime is 616127663797. The next prime is 616127663849. The reversal of 616127663844 is 448366721616.

The square root of 616127663844 is 784938.

It is a perfect power (a square), and thus also a powerful number.

616127663844 is a `hidden beast` number, since 616 + 12 + 7 + 6 + 6 + 3 + 8 + 4 + 4 = 666.

It is a super-2 number, since 2×616127663844² (a number of 24 digits) contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (616127663849) by changing a digit.

It is a polite number, since it can be written in 80 ways as a sum of consecutive naturals, for example, 362640507 + ... + 362642205.

Almost surely, 2^616127663844 is an apocalyptic number.

616127663844 is the 784938-th square number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 616127663844

616127663844 is an abundant number, since it is smaller than the sum of its proper divisors (1376427435327).

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

616127663844 is a wasteful number, since it uses less digits than its factorization.

616127663844 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3444 (or 1722 counting only the distinct ones).

The product of its digits is 6967296, while the sum is 54.

The spelling of 616127663844 in words is "six hundred sixteen billion, one hundred twenty-seven million, six hundred sixty-three thousand, eight hundred forty-four".