5515600066 has 4 divisors (see below), whose sum is σ = 8273400102. Its totient is φ = 2757800032.

The previous prime is 5515600019. The next prime is 5515600087. The reversal of 5515600066 is 6600065155.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in only one way, i.e., 4974339841 + 541260225 = 70529^2 + 23265^2 .

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1378900015 + ... + 1378900018.

Almost surely, 2^5515600066 is an apocalyptic number.

5515600066 is a deficient number, since it is larger than the sum of its proper divisors (2757800036).

5515600066 is a wasteful number, since it uses less digits than its factorization.

5515600066 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2757800035.

The product of its (nonzero) digits is 27000, while the sum is 34.

The square root of 5515600066 is about 74267.0860206592. The cubic root of 5515600066 is about 1766.8414912709.

The spelling of 5515600066 in words is "five billion, five hundred fifteen million, six hundred thousand, sixty-six".