12723678719 has 16 divisors (see below), whose sum is σ = 13831772160. Its totient is φ = 11659788000.

The previous prime is 12723678703. The next prime is 12723678739. The reversal of 12723678719 is 91787632721.

It is a cyclic number.

It is not a de Polignac number, because 12723678719 - 2⁴ = 12723678703 is a prime.

It is a super-2 number, since 2×12723678719² (a number of 21 digits) contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (12723678739) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 1870214 + ... + 1877004.

It is an arithmetic number, because the mean of its divisors is an integer number (864485760).

Almost surely, 2^12723678719 is an apocalyptic number.

12723678719 is a gapful number since it is divisible by the number (19) formed by its first and last digit.

12723678719 is a deficient number, since it is larger than the sum of its proper divisors (1108093441).

12723678719 is a wasteful number, since it uses less digits than its factorization.

12723678719 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 10022.

The product of its digits is 1778112, while the sum is 53.

The spelling of 12723678719 in words is "twelve billion, seven hundred twenty-three million, six hundred seventy-eight thousand, seven hundred nineteen".