6618554113 has 2 divisors, whose sum is σ = 6618554114. Its totient is φ = 6618554112.

The previous prime is 6618554081. The next prime is 6618554119. The reversal of 6618554113 is 3114558166.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 4194764289 + 2423789824 = 64767^2 + 49232^2 .

It is a cyclic number.

It is not a de Polignac number, because 6618554113 - 2⁵ = 6618554081 is a prime.

It is not a weakly prime, because it can be changed into another prime (6618554119) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 3309277056 + 3309277057.

It is an arithmetic number, because the mean of its divisors is an integer number (3309277057).

Almost surely, 2^6618554113 is an apocalyptic number.

It is an amenable number.

6618554113 is a deficient number, since it is larger than the sum of its proper divisors (1).

6618554113 is an equidigital number, since it uses as much as digits as its factorization.

6618554113 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 86400, while the sum is 40.

The square root of 6618554113 is about 81354.4965751740. The cubic root of 6618554113 is about 1877.5335576031.

The spelling of 6618554113 in words is "six billion, six hundred eighteen million, five hundred fifty-four thousand, one hundred thirteen".