138964205743 has 4 divisors (see below), whose sum is σ = 151597315368. Its totient is φ = 126331096120.

The previous prime is 138964205729. The next prime is 138964205753. The reversal of 138964205743 is 347502469831.

It is a happy number.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 347502469831 = 11 ⋅31591133621.

It is a cyclic number.

It is not a de Polignac number, because 138964205743 - 2¹⁷ = 138964074671 is a prime.

It is a super-2 number, since 2×138964205743² (a number of 23 digits) contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (138964205753) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 6316554796 + ... + 6316554817.

It is an arithmetic number, because the mean of its divisors is an integer number (37899328842).

It is a 1-persistent number, because it is pandigital, but 2⋅138964205743 = 277928411486 is not.

Almost surely, 2^138964205743 is an apocalyptic number.

138964205743 is a deficient number, since it is larger than the sum of its proper divisors (12633109625).

138964205743 is a wasteful number, since it uses less digits than its factorization.

138964205743 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 12633109624.

The product of its (nonzero) digits is 4354560, while the sum is 52.

The spelling of 138964205743 in words is "one hundred thirty-eight billion, nine hundred sixty-four million, two hundred five thousand, seven hundred forty-three".