138765391429 has 8 divisors (see below), whose sum is σ = 160761471680. Its totient is φ = 117312424416.

The previous prime is 138765391423. The next prime is 138765391451. The reversal of 138765391429 is 924193567831.

It is a happy number.

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 138765391429 - 2³ = 138765391421 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 (138765391421) 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, 135777759 + ... + 135778780.

It is an arithmetic number, because the mean of its divisors is an integer number (20095183960).

Almost surely, 2^138765391429 is an apocalyptic number.

It is an amenable number.

138765391429 is a deficient number, since it is larger than the sum of its proper divisors (21996080251).

138765391429 is an equidigital number, since it uses as much as digits as its factorization.

138765391429 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 271556619.

The product of its digits is 9797760, while the sum is 58.

The spelling of 138765391429 in words is "one hundred thirty-eight billion, seven hundred sixty-five million, three hundred ninety-one thousand, four hundred twenty-nine".