12722169439 has 8 divisors (see below), whose sum is σ = 14836349600. Its totient is φ = 10904716368.

The previous prime is 12722169437. The next prime is 12722169457. The reversal of 12722169439 is 93496122721.

It is not a de Polignac number, because 12722169439 - 2¹ = 12722169437 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 (12722169431) 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, 18545094 + ... + 18545779.

It is an arithmetic number, because the mean of its divisors is an integer number (1854543700).

Almost surely, 2^12722169439 is an apocalyptic number.

12722169439 is a deficient number, since it is larger than the sum of its proper divisors (2114180161).

12722169439 is an frugal number, since it uses more digits than its factorization.

12722169439 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 37090894 (or 37090880 counting only the distinct ones).

The product of its digits is 326592, while the sum is 46.

The spelling of 12722169439 in words is "twelve billion, seven hundred twenty-two million, one hundred sixty-nine thousand, four hundred thirty-nine".