138650181397 has 16 divisors (see below), whose sum is σ = 170716049280. Its totient is φ = 109656453312.

The previous prime is 138650181377. The next prime is 138650181403. The reversal of 138650181397 is 793181056831.

It is not a de Polignac number, because 138650181397 - 2¹⁹ = 138649657109 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (138650181377) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 86038 + ... + 533575.

It is an arithmetic number, because the mean of its divisors is an integer number (10669753080).

Almost surely, 2^138650181397 is an apocalyptic number.

It is an amenable number.

138650181397 is a deficient number, since it is larger than the sum of its proper divisors (32065867883).

138650181397 is a wasteful number, since it uses less digits than its factorization.

138650181397 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 622092.

The product of its (nonzero) digits is 1088640, while the sum is 52.

The spelling of 138650181397 in words is "one hundred thirty-eight billion, six hundred fifty million, one hundred eighty-one thousand, three hundred ninety-seven".