139834117585 has 4 divisors (see below), whose sum is σ = 167800941108. Its totient is φ = 111867294064.

The previous prime is 139834117547. The next prime is 139834117603. The reversal of 139834117585 is 585711438931.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 585711438931 = 433 ⋅1352682307.

It can be written as a sum of positive squares in 2 ways, for example, as 77240082241 + 62594035344 = 277921^2 + 250188^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-139834117585 is a prime.

It is a Duffinian number.

It is an unprimeable number.

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 3 ways as a sum of consecutive naturals, for example, 13983411754 + ... + 13983411763.

It is an arithmetic number, because the mean of its divisors is an integer number (41950235277).

Almost surely, 2^139834117585 is an apocalyptic number.

It is an amenable number.

139834117585 is a deficient number, since it is larger than the sum of its proper divisors (27966823523).

139834117585 is an equidigital number, since it uses as much as digits as its factorization.

139834117585 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 27966823522.

The product of its digits is 3628800, while the sum is 55.

The spelling of 139834117585 in words is "one hundred thirty-nine billion, eight hundred thirty-four million, one hundred seventeen thousand, five hundred eighty-five".