12722838158 has 4 divisors (see below), whose sum is σ = 19084257240. Its totient is φ = 6361419078.

The previous prime is 12722838133. The next prime is 12722838179. The reversal of 12722838158 is 85183822721.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 85183822721 = 71 ⋅1199772151.

It is a super-2 number, since 2×12722838158² (a number of 21 digits) contains 22 as substring.

It is a Curzon number.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 3180709538 + ... + 3180709541.

It is an arithmetic number, because the mean of its divisors is an integer number (4771064310).

Almost surely, 2^12722838158 is an apocalyptic number.

12722838158 is a deficient number, since it is larger than the sum of its proper divisors (6361419082).

12722838158 is an equidigital number, since it uses as much as digits as its factorization.

12722838158 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 6361419081.

The product of its digits is 430080, while the sum is 47.

The spelling of 12722838158 in words is "twelve billion, seven hundred twenty-two million, eight hundred thirty-eight thousand, one hundred fifty-eight".