66227221624 has 16 divisors (see below), whose sum is σ = 124180489800. Its totient is φ = 33112424352.

The previous prime is 66227221583. The next prime is 66227221631. The reversal of 66227221624 is 42612272266.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 116799 + ... + 382225.

Almost surely, 2^66227221624 is an apocalyptic number.

It is an amenable number.

66227221624 is a deficient number, since it is larger than the sum of its proper divisors (57953268176).

66227221624 is a wasteful number, since it uses less digits than its factorization.

66227221624 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 296622 (or 296618 counting only the distinct ones).

The product of its digits is 193536, while the sum is 40.

The spelling of 66227221624 in words is "sixty-six billion, two hundred twenty-seven million, two hundred twenty-one thousand, six hundred twenty-four".