66180622611316 has 24 divisors (see below), whose sum is σ = 116296590231360. Its totient is φ = 32953112276352.

The previous prime is 66180622611293. The next prime is 66180622611331. The reversal of 66180622611316 is 61311622608166.

It is a super-2 number, since 2×66180622611316² (a number of 28 digits) contains 22 as substring.

It is a self number, because there is not a number n which added to its sum of digits gives 66180622611316.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 7810026 + ... + 13905313.

It is an arithmetic number, because the mean of its divisors is an integer number (4845691259640).

Almost surely, 2^{66180622611316} is an apocalyptic number.

It is an amenable number.

66180622611316 is a deficient number, since it is larger than the sum of its proper divisors (50115967620044).

66180622611316 is a wasteful number, since it uses less digits than its factorization.

66180622611316 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 21718503 (or 21718501 counting only the distinct ones).

The product of its (nonzero) digits is 746496, while the sum is 49.

The spelling of 66180622611316 in words is "sixty-six trillion, one hundred eighty billion, six hundred twenty-two million, six hundred eleven thousand, three hundred sixteen".