66338577583366 has 16 divisors (see below), whose sum is σ = 110082966133248. Its totient is φ = 29729196099400.

The previous prime is 66338577583307. The next prime is 66338577583381.

66338577583366 is nontrivially palindromic in base 10.

It is a junction number, because it is equal to n+sod(n) for n = 66338577583292 and 66338577583301.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 21235138510 + ... + 21235141633.

It is an arithmetic number, because the mean of its divisors is an integer number (6880185383328).

Almost surely, 2^{66338577583366} is an apocalyptic number.

66338577583366 is a deficient number, since it is larger than the sum of its proper divisors (43744388549882).

66338577583366 is a wasteful number, since it uses less digits than its factorization.

66338577583366 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 42470280227.

The product of its digits is 8230118400, while the sum is 76.

The spelling of 66338577583366 in words is "sixty-six trillion, three hundred thirty-eight billion, five hundred seventy-seven million, five hundred eighty-three thousand, three hundred sixty-six".