139461639485 has 16 divisors (see below), whose sum is σ = 194397117312. Its totient is φ = 94063118400.

The previous prime is 139461639419. The next prime is 139461639509. The reversal of 139461639485 is 584936164931.

It is not a de Polignac number, because 139461639485 - 2³⁶ = 70742162749 is a prime.

It is a super-2 number, since 2×139461639485² (a number of 23 digits) contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 32658671 + ... + 32662940.

It is an arithmetic number, because the mean of its divisors is an integer number (12149819832).

Almost surely, 2^139461639485 is an apocalyptic number.

It is an amenable number.

139461639485 is a deficient number, since it is larger than the sum of its proper divisors (54935477827).

139461639485 is an equidigital number, since it uses as much as digits as its factorization.

139461639485 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 65321684.

The product of its digits is 16796160, while the sum is 59.

The spelling of 139461639485 in words is "one hundred thirty-nine billion, four hundred sixty-one million, six hundred thirty-nine thousand, four hundred eighty-five".