66052506176212 has 6 divisors (see below), whose sum is σ = 115591885808378. Its totient is φ = 33026253088104.

The previous prime is 66052506176183. The next prime is 66052506176263. The reversal of 66052506176212 is 21267160525066.

It can be written as a sum of positive squares in only one way, i.e., 52092075290256 + 13960430885956 = 7217484^2 + 3736366^2 .

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 8256563272023 + ... + 8256563272030.

Almost surely, 2^{66052506176212} is an apocalyptic number.

It is an amenable number.

66052506176212 is a deficient number, since it is larger than the sum of its proper divisors (49539379632166).

66052506176212 is a wasteful number, since it uses less digits than its factorization.

66052506176212 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 16513126544057 (or 16513126544055 counting only the distinct ones).

The product of its (nonzero) digits is 1814400, while the sum is 49.

The spelling of 66052506176212 in words is "sixty-six trillion, fifty-two billion, five hundred six million, one hundred seventy-six thousand, two hundred twelve".