66653660030 has 64 divisors (see below), whose sum is σ = 130731278400. Its totient is φ = 24371343360.

The previous prime is 66653659981. The next prime is 66653660041. The reversal of 66653660030 is 3006635666.

It is a self number, because there is not a number n which added to its sum of digits gives 66653660030.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 11463404 + ... + 11469216.

It is an arithmetic number, because the mean of its divisors is an integer number (2042676225).

Almost surely, 2^66653660030 is an apocalyptic number.

66653660030 is a deficient number, since it is larger than the sum of its proper divisors (64077618370).

66653660030 is a wasteful number, since it uses less digits than its factorization.

66653660030 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 7949.

The product of its (nonzero) digits is 349920, while the sum is 41.

The spelling of 66653660030 in words is "sixty-six billion, six hundred fifty-three million, six hundred sixty thousand, thirty".