138178451773 has 8 divisors (see below), whose sum is σ = 141171027840. Its totient is φ = 135188067840.

The previous prime is 138178451743. The next prime is 138178451777. The reversal of 138178451773 is 377154871831.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 138178451773 - 2³⁷ = 739498301 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (138178451777) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 420283 + ... + 673048.

It is an arithmetic number, because the mean of its divisors is an integer number (17646378480).

Almost surely, 2^138178451773 is an apocalyptic number.

It is an amenable number.

138178451773 is a deficient number, since it is larger than the sum of its proper divisors (2992576067).

138178451773 is a wasteful number, since it uses less digits than its factorization.

138178451773 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1096067.

The product of its digits is 3951360, while the sum is 55.

The spelling of 138178451773 in words is "one hundred thirty-eight billion, one hundred seventy-eight million, four hundred fifty-one thousand, seven hundred seventy-three".