66015303505 has 8 divisors (see below), whose sum is σ = 79567345152. Its totient is φ = 52579588848.

The previous prime is 66015303503. The next prime is 66015303509. The reversal of 66015303505 is 50530351066.

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

It is a cyclic number.

It is not a de Polignac number, because 66015303505 - 2¹ = 66015303503 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (66015303503) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 29080497 + ... + 29082766.

It is an arithmetic number, because the mean of its divisors is an integer number (9945918144).

Almost surely, 2^66015303505 is an apocalyptic number.

It is an amenable number.

66015303505 is a deficient number, since it is larger than the sum of its proper divisors (13552041647).

66015303505 is a wasteful number, since it uses less digits than its factorization.

66015303505 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 58163495.

The product of its (nonzero) digits is 40500, while the sum is 34.

The spelling of 66015303505 in words is "sixty-six billion, fifteen million, three hundred three thousand, five hundred five".