66901135228 has 12 divisors (see below), whose sum is σ = 117127057320. Its totient is φ = 33436261712.

The previous prime is 66901135199. The next prime is 66901135229. The reversal of 66901135228 is 82253110966.

It is a super-2 number, since 2×66901135228² (a number of 22 digits) contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (66901135229) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 3565951 + ... + 3584662.

It is an arithmetic number, because the mean of its divisors is an integer number (9760588110).

Almost surely, 2^66901135228 is an apocalyptic number.

It is an amenable number.

66901135228 is a deficient number, since it is larger than the sum of its proper divisors (50225922092).

66901135228 is a wasteful number, since it uses less digits than its factorization.

66901135228 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 7152956 (or 7152954 counting only the distinct ones).

The product of its (nonzero) digits is 155520, while the sum is 43.

The spelling of 66901135228 in words is "sixty-six billion, nine hundred one million, one hundred thirty-five thousand, two hundred twenty-eight".