66327072085507 has 4 divisors (see below), whose sum is σ = 66327211088856. Its totient is φ = 66326933082160.

The previous prime is 66327072085471. The next prime is 66327072085559. The reversal of 66327072085507 is 70558027072366.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 66327072085507 - 2²⁷ = 66326937867779 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (66327072055507) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 68783458 + ... + 69741079.

It is an arithmetic number, because the mean of its divisors is an integer number (16581802772214).

Almost surely, 2^{66327072085507} is an apocalyptic number.

66327072085507 is a deficient number, since it is larger than the sum of its proper divisors (139003349).

66327072085507 is a wasteful number, since it uses less digits than its factorization.

66327072085507 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 139003348.

The product of its (nonzero) digits is 29635200, while the sum is 58.

The spelling of 66327072085507 in words is "sixty-six trillion, three hundred twenty-seven billion, seventy-two million, eighty-five thousand, five hundred seven".