4006667400067 has 4 divisors (see below), whose sum is σ = 4242353717736. Its totient is φ = 3770981082400.

The previous prime is 4006667400049. The next prime is 4006667400079. The reversal of 4006667400067 is 7600047666004.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-4006667400067 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (4006667400037) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 117843158809 + ... + 117843158842.

It is an arithmetic number, because the mean of its divisors is an integer number (1060588429434).

Almost surely, 2^{4006667400067} is an apocalyptic number.

4006667400067 is a deficient number, since it is larger than the sum of its proper divisors (235686317669).

4006667400067 is a wasteful number, since it uses less digits than its factorization.

4006667400067 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 235686317668.

The product of its (nonzero) digits is 1016064, while the sum is 46.

The spelling of 4006667400067 in words is "four trillion, six billion, six hundred sixty-seven million, four hundred thousand, sixty-seven".