138665526777185 has 8 divisors (see below), whose sum is σ = 169218947931840. Its totient is φ = 109052210888944.

The previous prime is 138665526777149. The next prime is 138665526777187. The reversal of 138665526777185 is 581777625566831.

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

It is a cyclic number.

It is not a de Polignac number, because 138665526777185 - 2¹⁴ = 138665526760801 is a prime.

It is not an unprimeable number, because it can be changed into a prime (138665526777187) 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, 235026316277 + ... + 235026316866.

It is an arithmetic number, because the mean of its divisors is an integer number (21152368491480).

Almost surely, 2^{138665526777185} is an apocalyptic number.

It is an amenable number.

138665526777185 is a deficient number, since it is larger than the sum of its proper divisors (30553421154655).

138665526777185 is an equidigital number, since it uses as much as digits as its factorization.

138665526777185 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 470052633207.

The product of its digits is 3556224000, while the sum is 77.

The spelling of 138665526777185 in words is "one hundred thirty-eight trillion, six hundred sixty-five billion, five hundred twenty-six million, seven hundred seventy-seven thousand, one hundred eighty-five".