66622322641 has 16 divisors (see below), whose sum is σ = 76365917824. Its totient is φ = 56935436544.

The previous prime is 66622322633. The next prime is 66622322671. The reversal of 66622322641 is 14622322666.

It is not a de Polignac number, because 66622322641 - 2³ = 66622322633 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 66622322594 and 66622322603.

It is not an unprimeable number, because it can be changed into a prime (66622322671) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 5216035 + ... + 5228791.

It is an arithmetic number, because the mean of its divisors is an integer number (4772869864).

Almost surely, 2^66622322641 is an apocalyptic number.

It is an amenable number.

66622322641 is a deficient number, since it is larger than the sum of its proper divisors (9743595183).

66622322641 is a wasteful number, since it uses less digits than its factorization.

66622322641 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 14920.

The product of its digits is 248832, while the sum is 40.

The spelling of 66622322641 in words is "sixty-six billion, six hundred twenty-two million, three hundred twenty-two thousand, six hundred forty-one".