66242622222680 has 16 divisors (see below), whose sum is σ = 149045900001120. Its totient is φ = 26497048889056.

The previous prime is 66242622222649. The next prime is 66242622222827. The reversal of 66242622222680 is 8622222624266.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (29) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 828032777744 + ... + 828032777823.

It is an arithmetic number, because the mean of its divisors is an integer number (9315368750070).

Almost surely, 2^{66242622222680} is an apocalyptic number.

It is an amenable number.

66242622222680 is an abundant number, since it is smaller than the sum of its proper divisors (82803277778440).

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

66242622222680 is a wasteful number, since it uses less digits than its factorization.

66242622222680 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1656065555578 (or 1656065555574 counting only the distinct ones).

The product of its (nonzero) digits is 5308416, while the sum is 50.

The spelling of 66242622222680 in words is "sixty-six trillion, two hundred forty-two billion, six hundred twenty-two million, two hundred twenty-two thousand, six hundred eighty".