138787651289 has 8 divisors (see below), whose sum is σ = 158646651840. Its totient is φ = 118936699056.

The previous prime is 138787651267. The next prime is 138787651309. The reversal of 138787651289 is 982156787831.

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

It is not a de Polignac number, because 138787651289 - 2²⁸ = 138519215833 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (138787651259) 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, 1975079 + ... + 2044140.

It is an arithmetic number, because the mean of its divisors is an integer number (19830831480).

Almost surely, 2^138787651289 is an apocalyptic number.

It is an amenable number.

138787651289 is a deficient number, since it is larger than the sum of its proper divisors (19859000551).

138787651289 is an equidigital number, since it uses as much as digits as its factorization.

138787651289 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4024159.

The product of its digits is 40642560, while the sum is 65.

The spelling of 138787651289 in words is "one hundred thirty-eight billion, seven hundred eighty-seven million, six hundred fifty-one thousand, two hundred eighty-nine".