66656061626424 has 32 divisors (see below), whose sum is σ = 166686976464000. Its totient is φ = 22212444222432.

The previous prime is 66656061626389. The next prime is 66656061626443. The reversal of 66656061626424 is 42462616065666.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 390099454 + ... + 390270285.

It is an arithmetic number, because the mean of its divisors is an integer number (5208968014500).

Almost surely, 2^{66656061626424} is an apocalyptic number.

It is an amenable number.

66656061626424 is an abundant number, since it is smaller than the sum of its proper divisors (100030914837576).

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

66656061626424 is a wasteful number, since it uses less digits than its factorization.

66656061626424 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 780373307 (or 780373303 counting only the distinct ones).

The product of its (nonzero) digits is 89579520, while the sum is 60.

The spelling of 66656061626424 in words is "sixty-six trillion, six hundred fifty-six billion, sixty-one million, six hundred twenty-six thousand, four hundred twenty-four".