13906840067667 has 6 divisors (see below), whose sum is σ = 20087657875532. Its totient is φ = 9271226711772.

The previous prime is 13906840067647. The next prime is 13906840067669. The reversal of 13906840067667 is 76676004860931.

13906840067667 is a `hidden beast` number, since 13 + 90 + 6 + 8 + 400 + 6 + 76 + 67 = 666.

It is not a de Polignac number, because 13906840067667 - 2⁷ = 13906840067539 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (13906840067669) by changing a digit.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 772602225973 + ... + 772602225990.

Almost surely, 2^{13906840067667} is an apocalyptic number.

13906840067667 is a deficient number, since it is larger than the sum of its proper divisors (6180817807865).

13906840067667 is a wasteful number, since it uses less digits than its factorization.

13906840067667 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1545204451969 (or 1545204451966 counting only the distinct ones).

The product of its (nonzero) digits is 54867456, while the sum is 63.

The spelling of 13906840067667 in words is "thirteen trillion, nine hundred six billion, eight hundred forty million, sixty-seven thousand, six hundred sixty-seven".