66667400074067 has 48 divisors (see below), whose sum is σ = 75804792749280. Its totient is φ = 58522002739200.

The previous prime is 66667400074063. The next prime is 66667400074069. The reversal of 66667400074067 is 76047000476666.

66667400074067 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is not a de Polignac number, because 66667400074067 - 2² = 66667400074063 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 66667400073997 and 66667400074015.

It is not an unprimeable number, because it can be changed into a prime (66667400074063) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 4150879217 + ... + 4150895277.

It is an arithmetic number, because the mean of its divisors is an integer number (1579266515610).

Almost surely, 2^{66667400074067} is an apocalyptic number.

66667400074067 is a gapful number since it is divisible by the number (67) formed by its first and last digit.

66667400074067 is a deficient number, since it is larger than the sum of its proper divisors (9137392675213).

66667400074067 is a wasteful number, since it uses less digits than its factorization.

66667400074067 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 28824 (or 28811 counting only the distinct ones).

The product of its (nonzero) digits is 42674688, while the sum is 59.

The spelling of 66667400074067 in words is "sixty-six trillion, six hundred sixty-seven billion, four hundred million, seventy-four thousand, sixty-seven".