138873094827 has 4 divisors (see below), whose sum is σ = 185164126440. Its totient is φ = 92582063216.

The previous prime is 138873094813. The next prime is 138873094847. The reversal of 138873094827 is 728490378831.

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 138873094827 - 2¹⁰ = 138873093803 is a prime.

It is not an unprimeable number, because it can be changed into a prime (138873094847) 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, 23145515802 + ... + 23145515807.

It is an arithmetic number, because the mean of its divisors is an integer number (46291031610).

Almost surely, 2^138873094827 is an apocalyptic number.

138873094827 is a deficient number, since it is larger than the sum of its proper divisors (46291031613).

138873094827 is an equidigital number, since it uses as much as digits as its factorization.

138873094827 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 46291031612.

The product of its (nonzero) digits is 16257024, while the sum is 60.

The spelling of 138873094827 in words is "one hundred thirty-eight billion, eight hundred seventy-three million, ninety-four thousand, eight hundred twenty-seven".