138985560959 has 8 divisors (see below), whose sum is σ = 161444586528. Its totient is φ = 117177521760.

The previous prime is 138985560953. The next prime is 138985560977. The reversal of 138985560959 is 959065589831.

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 138985560959 - 2¹² = 138985556863 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 (138985560953) 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, 162746132 + ... + 162746985.

It is an arithmetic number, because the mean of its divisors is an integer number (20180573316).

Almost surely, 2^138985560959 is an apocalyptic number.

138985560959 is a deficient number, since it is larger than the sum of its proper divisors (22459025569).

138985560959 is an equidigital number, since it uses as much as digits as its factorization.

138985560959 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 325493185.

The product of its (nonzero) digits is 104976000, while the sum is 68.

The spelling of 138985560959 in words is "one hundred thirty-eight billion, nine hundred eighty-five million, five hundred sixty thousand, nine hundred fifty-nine".