138863683745279 has 8 divisors (see below), whose sum is σ = 139334897295360. Its totient is φ = 138392628571000.

The previous prime is 138863683745273. The next prime is 138863683745287. The reversal of 138863683745279 is 972547386368831.

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 138863683745279 - 2⁴ = 138863683745263 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 (138863683745273) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 37837247 + ... + 41344704.

It is an arithmetic number, because the mean of its divisors is an integer number (17416862161920).

Almost surely, 2^{138863683745279} is an apocalyptic number.

138863683745279 is a deficient number, since it is larger than the sum of its proper divisors (471213550081).

138863683745279 is an equidigital number, since it uses as much as digits as its factorization.

138863683745279 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 79187901.

The product of its digits is 8778792960, while the sum is 80.

The spelling of 138863683745279 in words is "one hundred thirty-eight trillion, eight hundred sixty-three billion, six hundred eighty-three million, seven hundred forty-five thousand, two hundred seventy-nine".