138407681741 has 8 divisors (see below), whose sum is σ = 158188122240. Its totient is φ = 118629219888.

The previous prime is 138407681651. The next prime is 138407681761. The reversal of 138407681741 is 147186704831.

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-138407681741 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 138407681741.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (138407681761) 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, 341606 + ... + 627303.

It is an arithmetic number, because the mean of its divisors is an integer number (19773515280).

Almost surely, 2^138407681741 is an apocalyptic number.

It is an amenable number.

138407681741 is a deficient number, since it is larger than the sum of its proper divisors (19780440499).

138407681741 is an equidigital number, since it uses as much as digits as its factorization.

138407681741 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 989323.

The product of its (nonzero) digits is 903168, while the sum is 50.

The spelling of 138407681741 in words is "one hundred thirty-eight billion, four hundred seven million, six hundred eighty-one thousand, seven hundred forty-one".