66841768973226 has 32 divisors (see below), whose sum is σ = 145065870911808. Its totient is φ = 20409700446720.

The previous prime is 66841768973197. The next prime is 66841768973249. The reversal of 66841768973226 is 62237986714866.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 3270775111 + ... + 3270795546.

It is an arithmetic number, because the mean of its divisors is an integer number (4533308465994).

Almost surely, 2^{66841768973226} is an apocalyptic number.

66841768973226 is an abundant number, since it is smaller than the sum of its proper divisors (78224101938582).

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

66841768973226 is a wasteful number, since it uses less digits than its factorization.

66841768973226 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 6541570806.

The product of its digits is 1755758592, while the sum is 75.

The spelling of 66841768973226 in words is "sixty-six trillion, eight hundred forty-one billion, seven hundred sixty-eight million, nine hundred seventy-three thousand, two hundred twenty-six".