5555661616 has 20 divisors (see below), whose sum is σ = 10818740592. Its totient is φ = 2763728576.

The previous prime is 5555661613. The next prime is 5555661637. The reversal of 5555661616 is 6161665555.

It is a super-3 number, since 3×5555661616³ (a number of 30 digits) contains 333 as substring.

It is not an unprimeable number, because it can be changed into a prime (5555661613) 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, 878140 + ... + 884443.

Almost surely, 2^5555661616 is an apocalyptic number.

It is an amenable number.

5555661616 is a deficient number, since it is larger than the sum of its proper divisors (5263078976).

5555661616 is a wasteful number, since it uses less digits than its factorization.

5555661616 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1762788 (or 1762782 counting only the distinct ones).

The product of its digits is 810000, while the sum is 46.

The square root of 5555661616 is about 74536.3107216879. The cubic root of 5555661616 is about 1771.1088858366.

The spelling of 5555661616 in words is "five billion, five hundred fifty-five million, six hundred sixty-one thousand, six hundred sixteen".