138600071647 has 24 divisors (see below), whose sum is σ = 155116907600. Its totient is φ = 123473673216.

The previous prime is 138600071567. The next prime is 138600071653. The reversal of 138600071647 is 746170006831.

It is not a de Polignac number, because 138600071647 - 2²³ = 138591683039 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 (138600071677) 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 23 ways as a sum of consecutive naturals, for example, 6650179 + ... + 6670987.

Almost surely, 2^138600071647 is an apocalyptic number.

138600071647 is a gapful number since it is divisible by the number (17) formed by its first and last digit.

138600071647 is a deficient number, since it is larger than the sum of its proper divisors (16516835953).

138600071647 is a wasteful number, since it uses less digits than its factorization.

138600071647 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 22075 (or 22058 counting only the distinct ones).

The product of its (nonzero) digits is 169344, while the sum is 43.

The spelling of 138600071647 in words is "one hundred thirty-eight billion, six hundred million, seventy-one thousand, six hundred forty-seven".