66016533316424 has 8 divisors (see below), whose sum is σ = 123780999968310. Its totient is φ = 33008266658208.

The previous prime is 66016533316403. The next prime is 66016533316493. The reversal of 66016533316424 is 42461333561066.

It can be written as a sum of positive squares in only one way, i.e., 65432406340900 + 584126975524 = 8089030^2 + 764282^2 .

It is a tau number, because it is divible by the number of its divisors (8).

It is a super-2 number, since 2×66016533316424² (a number of 28 digits) contains 22 as substring.

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 4126033332269 + ... + 4126033332284.

Almost surely, 2^{66016533316424} is an apocalyptic number.

It is an amenable number.

66016533316424 is a deficient number, since it is larger than the sum of its proper divisors (57764466651886).

66016533316424 is a wasteful number, since it uses less digits than its factorization.

66016533316424 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 8252066664559 (or 8252066664555 counting only the distinct ones).

The product of its (nonzero) digits is 5598720, while the sum is 50.

The spelling of 66016533316424 in words is "sixty-six trillion, sixteen billion, five hundred thirty-three million, three hundred sixteen thousand, four hundred twenty-four".