66700670001040 has 80 divisors (see below), whose sum is σ = 161915551705728. Its totient is φ = 25505443611648.

The previous prime is 66700670001037. The next prime is 66700670001041. The reversal of 66700670001040 is 4010007600766.

It is a tau number, because it is divible by the number of its divisors (80).

It is not an unprimeable number, because it can be changed into a prime (66700670001041) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (29) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 7349229 + ... + 13689868.

Almost surely, 2^{66700670001040} is an apocalyptic number.

It is an amenable number.

66700670001040 is an abundant number, since it is smaller than the sum of its proper divisors (95214881704688).

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

66700670001040 is a wasteful number, since it uses less digits than its factorization.

66700670001040 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 21040856 (or 21040850 counting only the distinct ones).

The product of its (nonzero) digits is 42336, while the sum is 37.

The spelling of 66700670001040 in words is "sixty-six trillion, seven hundred billion, six hundred seventy million, one thousand, forty".