138855146031667 has 4 divisors (see below), whose sum is σ = 149536311111040. Its totient is φ = 128173980952296.

The previous prime is 138855146031629. The next prime is 138855146031689. The reversal of 138855146031667 is 766130641558831.

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

It is a cyclic number.

It is not a de Polignac number, because 138855146031667 - 2¹¹ = 138855146029619 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 138855146031599 and 138855146031608.

It is not an unprimeable number, because it can be changed into a prime (138855146031467) 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, 5340582539667 + ... + 5340582539692.

It is an arithmetic number, because the mean of its divisors is an integer number (37384077777760).

Almost surely, 2^{138855146031667} is an apocalyptic number.

138855146031667 is a deficient number, since it is larger than the sum of its proper divisors (10681165079373).

138855146031667 is a wasteful number, since it uses less digits than its factorization.

138855146031667 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 10681165079372.

The product of its (nonzero) digits is 87091200, while the sum is 64.

The spelling of 138855146031667 in words is "one hundred thirty-eight trillion, eight hundred fifty-five billion, one hundred forty-six million, thirty-one thousand, six hundred sixty-seven".