138734231543 has 4 divisors (see below), whose sum is σ = 139037808000. Its totient is φ = 138430655088.

The previous prime is 138734231437. The next prime is 138734231557. The reversal of 138734231543 is 345132437831.

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 138734231543 - 2¹⁶ = 138734166007 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 138734231494 and 138734231503.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (138734231143) 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, 151787543 + ... + 151788456.

It is an arithmetic number, because the mean of its divisors is an integer number (34759452000).

Almost surely, 2^138734231543 is an apocalyptic number.

138734231543 is a deficient number, since it is larger than the sum of its proper divisors (303576457).

138734231543 is an equidigital number, since it uses as much as digits as its factorization.

138734231543 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 303576456.

The product of its digits is 725760, while the sum is 44.

The spelling of 138734231543 in words is "one hundred thirty-eight billion, seven hundred thirty-four million, two hundred thirty-one thousand, five hundred forty-three".