66800674001 has 2 divisors, whose sum is σ = 66800674002. Its totient is φ = 66800674000.

The previous prime is 66800673983. The next prime is 66800674027. The reversal of 66800674001 is 10047600866.

66800674001 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 43190814976 + 23609859025 = 207824^2 + 153655^2 .

It is a cyclic number.

It is not a de Polignac number, because 66800674001 - 2⁶ = 66800673937 is a prime.

It is not a weakly prime, because it can be changed into another prime (66800674091) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 33400337000 + 33400337001.

It is an arithmetic number, because the mean of its divisors is an integer number (33400337001).

Almost surely, 2^66800674001 is an apocalyptic number.

It is an amenable number.

66800674001 is a deficient number, since it is larger than the sum of its proper divisors (1).

66800674001 is an equidigital number, since it uses as much as digits as its factorization.

66800674001 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 48384, while the sum is 38.

The spelling of 66800674001 in words is "sixty-six billion, eight hundred million, six hundred seventy-four thousand, one".