66733336740 has 48 divisors (see below), whose sum is σ = 213546678912. Its totient is φ = 15253334016.

The previous prime is 66733336727. The next prime is 66733336741. The reversal of 66733336740 is 4763333766.

It is a self number, because there is not a number n which added to its sum of digits gives 66733336740.

It is not an unprimeable number, because it can be changed into a prime (66733336741) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 79444029 + ... + 79444868.

It is an arithmetic number, because the mean of its divisors is an integer number (4448889144).

Almost surely, 2^66733336740 is an apocalyptic number.

66733336740 is a gapful number since it is divisible by the number (60) formed by its first and last digit.

It is an amenable number.

66733336740 is an abundant number, since it is smaller than the sum of its proper divisors (146813342172).

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

66733336740 is a wasteful number, since it uses less digits than its factorization.

66733336740 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 158888916 (or 158888914 counting only the distinct ones).

The product of its (nonzero) digits is 3429216, while the sum is 48.

The spelling of 66733336740 in words is "sixty-six billion, seven hundred thirty-three million, three hundred thirty-six thousand, seven hundred forty".