66200016545765 has 8 divisors (see below), whose sum is σ = 79440064604448. Its totient is φ = 52959983403600.

The previous prime is 66200016545737. The next prime is 66200016545813. The reversal of 66200016545765 is 56754561000266.

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

It is not a de Polignac number, because 66200016545765 - 2⁶ = 66200016545701 is a prime.

It is a Duffinian number.

It is a Curzon number.

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, 12291290 + ... + 16836740.

It is an arithmetic number, because the mean of its divisors is an integer number (9930008075556).

Almost surely, 2^{66200016545765} is an apocalyptic number.

It is an amenable number.

66200016545765 is a deficient number, since it is larger than the sum of its proper divisors (13240048058683).

66200016545765 is a wasteful number, since it uses less digits than its factorization.

66200016545765 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 7458259.

The product of its (nonzero) digits is 9072000, while the sum is 53.

The spelling of 66200016545765 in words is "sixty-six trillion, two hundred billion, sixteen million, five hundred forty-five thousand, seven hundred sixty-five".