66318083488 has 24 divisors (see below), whose sum is σ = 131856443460. Its totient is φ = 32830732800.

The previous prime is 66318083483. The next prime is 66318083521. The reversal of 66318083488 is 88438081366.

It can be written as a sum of positive squares in 2 ways, for example, as 52538140944 + 13779942544 = 229212^2 + 117388^2 .

It is a super-2 number, since 2×66318083488² (a number of 22 digits) contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (66318083483) 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 3 ways as a sum of consecutive naturals, for example, 10256373 + ... + 10262836.

Almost surely, 2^66318083488 is an apocalyptic number.

It is an amenable number.

66318083488 is a deficient number, since it is larger than the sum of its proper divisors (65538359972).

66318083488 is a wasteful number, since it uses less digits than its factorization.

66318083488 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 20519320 (or 20519312 counting only the distinct ones).

The product of its (nonzero) digits is 5308416, while the sum is 55.

The spelling of 66318083488 in words is "sixty-six billion, three hundred eighteen million, eighty-three thousand, four hundred eighty-eight".