66741075660 has 96 divisors (see below), whose sum is σ = 215201935872. Its totient is φ = 15138639360.

The previous prime is 66741075647. The next prime is 66741075733. The reversal of 66741075660 is 6657014766.

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, 551497 + ... + 661536.

It is an arithmetic number, because the mean of its divisors is an integer number (2241686832).

Almost surely, 2^66741075660 is an apocalyptic number.

66741075660 is a gapful number since it is divisible by the number (60) formed by its first and last digit.

It is an amenable number.

66741075660 is an abundant number, since it is smaller than the sum of its proper divisors (148460860212).

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

66741075660 is a wasteful number, since it uses less digits than its factorization.

66741075660 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1213183 (or 1213181 counting only the distinct ones).

The product of its (nonzero) digits is 1270080, while the sum is 48.

The spelling of 66741075660 in words is "sixty-six billion, seven hundred forty-one million, seventy-five thousand, six hundred sixty".