66060633565 has 32 divisors (see below), whose sum is σ = 83173257216. Its totient is φ = 50316963840.

The previous prime is 66060633559. The next prime is 66060633571. The reversal of 66060633565 is 56533606066.

It is an interprime number because it is at equal distance from previous prime (66060633559) and next prime (66060633571).

It is not a de Polignac number, because 66060633565 - 2⁷ = 66060633437 is a prime.

It is a Duffinian number.

It is a congruent number.

It is an unprimeable number.

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 31 ways as a sum of consecutive naturals, for example, 3391444 + ... + 3410866.

It is an arithmetic number, because the mean of its divisors is an integer number (2599164288).

Almost surely, 2^66060633565 is an apocalyptic number.

It is an amenable number.

66060633565 is a deficient number, since it is larger than the sum of its proper divisors (17112623651).

66060633565 is a wasteful number, since it uses less digits than its factorization.

66060633565 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 19869.

The product of its (nonzero) digits is 1749600, while the sum is 46.

The spelling of 66060633565 in words is "sixty-six billion, sixty million, six hundred thirty-three thousand, five hundred sixty-five".