138844661414 has 16 divisors (see below), whose sum is σ = 213980432400. Its totient is φ = 67542111744.

The previous prime is 138844661411. The next prime is 138844661443. The reversal of 138844661414 is 414166448831.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (138844661411) 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, 6053759 + ... + 6076650.

It is an arithmetic number, because the mean of its divisors is an integer number (13373777025).

Almost surely, 2^138844661414 is an apocalyptic number.

138844661414 is a deficient number, since it is larger than the sum of its proper divisors (75135770986).

138844661414 is a wasteful number, since it uses less digits than its factorization.

138844661414 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 12130567.

The product of its digits is 1769472, while the sum is 50.

The spelling of 138844661414 in words is "one hundred thirty-eight billion, eight hundred forty-four million, six hundred sixty-one thousand, four hundred fourteen".