6616055540 has 24 divisors (see below), whose sum is σ = 13895408520. Its totient is φ = 2646099968.

The previous prime is 6616055539. The next prime is 6616055543. The reversal of 6616055540 is 455506166.

It can be written as a sum of positive squares in 4 ways, for example, as 21641104 + 6594414436 = 4652^2 + 81206^2 .

It is a junction number, because it is equal to n+sod(n) for n = 6616055494 and 6616055503.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (6616055543) by changing a digit.

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 7 ways as a sum of consecutive naturals, for example, 215384 + ... + 244176.

It is an arithmetic number, because the mean of its divisors is an integer number (578975355).

Almost surely, 2^6616055540 is an apocalyptic number.

It is an amenable number.

6616055540 is an abundant number, since it is smaller than the sum of its proper divisors (7279352980).

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

6616055540 is a wasteful number, since it uses less digits than its factorization.

6616055540 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 40291 (or 40289 counting only the distinct ones).

The product of its (nonzero) digits is 108000, while the sum is 38.

The square root of 6616055540 is about 81339.1390414233. The cubic root of 6616055540 is about 1877.2972650525.

The spelling of 6616055540 in words is "six billion, six hundred sixteen million, fifty-five thousand, five hundred forty".