66740067033700 has 72 divisors (see below), whose sum is σ = 153457794963144. Its totient is φ = 25107210240000.

The previous prime is 66740067033641. The next prime is 66740067033707. The reversal of 66740067033700 is 733076004766.

It can be written as a sum of positive squares in 12 ways, for example, as 21047009640804 + 45693057392896 = 4587702^2 + 6759664^2 .

It is not an unprimeable number, because it can be changed into a prime (66740067033707) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 12109101 + ... + 16736500.

It is an arithmetic number, because the mean of its divisors is an integer number (2131358263377).

Almost surely, 2^{66740067033700} is an apocalyptic number.

It is an amenable number.

66740067033700 is an abundant number, since it is smaller than the sum of its proper divisors (86717727929444).

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

66740067033700 is a wasteful number, since it uses less digits than its factorization.

66740067033700 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 28846993 (or 28846986 counting only the distinct ones).

The product of its (nonzero) digits is 2667168, while the sum is 49.

The spelling of 66740067033700 in words is "sixty-six trillion, seven hundred forty billion, sixty-seven million, thirty-three thousand, seven hundred".