5521432666 has 8 divisors (see below), whose sum is σ = 8287339860. Its totient is φ = 2758986048.

The previous prime is 5521432663. The next prime is 5521432691. The reversal of 5521432666 is 6662341255.

It is a happy number.

It can be written as a sum of positive squares in 2 ways, for example, as 5493922641 + 27510025 = 74121^2 + 5245^2 .

It is a sphenic number, since it is the product of 3 distinct primes.

It is a super-3 number, since 3×5521432666³ (a number of 30 digits) contains 333 as substring.

It is not an unprimeable number, because it can be changed into a prime (5521432663) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 861151 + ... + 867538.

Almost surely, 2^5521432666 is an apocalyptic number.

5521432666 is a deficient number, since it is larger than the sum of its proper divisors (2765907194).

5521432666 is a wasteful number, since it uses less digits than its factorization.

5521432666 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1730288.

The product of its digits is 259200, while the sum is 40.

The square root of 5521432666 is about 74306.3433765920. The cubic root of 5521432666 is about 1767.4640677916.

The spelling of 5521432666 in words is "five billion, five hundred twenty-one million, four hundred thirty-two thousand, six hundred sixty-six".