66958630244 has 24 divisors (see below), whose sum is σ = 128492460768. Its totient is φ = 30278039040.

The previous prime is 66958630217. The next prime is 66958630259. The reversal of 66958630244 is 44203685966.

It is a super-3 number, since 3×66958630244³ (a number of 33 digits) contains 333 as substring. Note that it is a super-d number also for d = 2.

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, 3933962 + ... + 3950945.

It is an arithmetic number, because the mean of its divisors is an integer number (5353852532).

Almost surely, 2^66958630244 is an apocalyptic number.

It is an amenable number.

66958630244 is a deficient number, since it is larger than the sum of its proper divisors (61533830524).

66958630244 is a wasteful number, since it uses less digits than its factorization.

66958630244 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 7885115 (or 7885113 counting only the distinct ones).

The product of its (nonzero) digits is 7464960, while the sum is 53.

The spelling of 66958630244 in words is "sixty-six billion, nine hundred fifty-eight million, six hundred thirty thousand, two hundred forty-four".