139220975165 has 8 divisors (see below), whose sum is σ = 167373981528. Its totient is φ = 111170905920.

The previous prime is 139220975161. The next prime is 139220975191. The reversal of 139220975165 is 561579022931.

It can be written as a sum of positive squares in 4 ways, for example, as 1317181849 + 137903793316 = 36293^2 + 371354^2 .

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

It is not a de Polignac number, because 139220975165 - 2² = 139220975161 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 (139220975161) 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, 25731302 + ... + 25736711.

It is an arithmetic number, because the mean of its divisors is an integer number (20921747691).

Almost surely, 2^139220975165 is an apocalyptic number.

It is an amenable number.

139220975165 is a deficient number, since it is larger than the sum of its proper divisors (28153006363).

139220975165 is an equidigital number, since it uses as much as digits as its factorization.

139220975165 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 51468559.

The product of its (nonzero) digits is 1020600, while the sum is 50.

The spelling of 139220975165 in words is "one hundred thirty-nine billion, two hundred twenty million, nine hundred seventy-five thousand, one hundred sixty-five".