66601272060012 has 12 divisors (see below), whose sum is σ = 155402968140056. Its totient is φ = 22200424020000.

The previous prime is 66601272059989. The next prime is 66601272060061. The reversal of 66601272060012 is 21006027210666.

It is a tau number, because it is divible by the number of its divisors (12).

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 2775053002489 + ... + 2775053002512.

Almost surely, 2^{66601272060012} is an apocalyptic number.

It is an amenable number.

66601272060012 is an abundant number, since it is smaller than the sum of its proper divisors (88801696080044).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

66601272060012 is a wasteful number, since it uses less digits than its factorization.

66601272060012 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5550106005008 (or 5550106005006 counting only the distinct ones).

The product of its (nonzero) digits is 72576, while the sum is 39.

Adding to 66601272060012 its reverse (21006027210666), we get a palindrome (87607299270678).

The spelling of 66601272060012 in words is "sixty-six trillion, six hundred one billion, two hundred seventy-two million, sixty thousand, twelve".