138873288415 has 4 divisors (see below), whose sum is σ = 166647946104. Its totient is φ = 111098630728.

The previous prime is 138873288377. The next prime is 138873288431. The reversal of 138873288415 is 514882378831.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 514882378831 = 14149 ⋅36390019.

It is a cyclic number.

It is not a de Polignac number, because 138873288415 - 2⁷ = 138873288287 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 138873288415.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 13887328837 + ... + 13887328846.

It is an arithmetic number, because the mean of its divisors is an integer number (41661986526).

Almost surely, 2^138873288415 is an apocalyptic number.

138873288415 is a deficient number, since it is larger than the sum of its proper divisors (27774657689).

138873288415 is an equidigital number, since it uses as much as digits as its factorization.

138873288415 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 27774657688.

The product of its digits is 10321920, while the sum is 58.

The spelling of 138873288415 in words is "one hundred thirty-eight billion, eight hundred seventy-three million, two hundred eighty-eight thousand, four hundred fifteen".