138144601447 has 8 divisors (see below), whose sum is σ = 138294426240. Its totient is φ = 137994827520.

The previous prime is 138144601429. The next prime is 138144601451. The reversal of 138144601447 is 744106441831.

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

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-138144601447 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 (138144601547) 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 7 ways as a sum of consecutive naturals, for example, 8031018 + ... + 8048200.

It is an arithmetic number, because the mean of its divisors is an integer number (17286803280).

Almost surely, 2^138144601447 is an apocalyptic number.

138144601447 is a deficient number, since it is larger than the sum of its proper divisors (149824793).

138144601447 is a wasteful number, since it uses less digits than its factorization.

138144601447 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 25433.

The product of its (nonzero) digits is 258048, while the sum is 43.

The spelling of 138144601447 in words is "one hundred thirty-eight billion, one hundred forty-four million, six hundred one thousand, four hundred forty-seven".