616645546616 has 64 divisors (see below), whose sum is σ = 1340338013280. Its totient is φ = 262853038080.

The previous prime is 616645546609. The next prime is 616645546681.

616645546616 is nontrivially palindromic in base 10.

It is a super-2 number, since 2×616645546616² (a number of 24 digits) contains 22 as substring.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 329645 + ... + 1158428.

Almost surely, 2^616645546616 is an apocalyptic number.

It is an amenable number.

616645546616 is an abundant number, since it is smaller than the sum of its proper divisors (723692466664).

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

616645546616 is a wasteful number, since it uses less digits than its factorization.

616645546616 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1488384 (or 1488380 counting only the distinct ones).

The product of its digits is 18662400, while the sum is 56.

The spelling of 616645546616 in words is "six hundred sixteen billion, six hundred forty-five million, five hundred forty-six thousand, six hundred sixteen".