12905639267069 has 16 divisors (see below), whose sum is σ = 14041630548480. Its totient is φ = 11816364732480.

The previous prime is 12905639267041. The next prime is 12905639267071. The reversal of 12905639267069 is 96076293650921.

It is not a de Polignac number, because 12905639267069 - 2²⁰ = 12905638218493 is a prime.

It is a super-2 number, since 2×12905639267069² (a number of 27 digits) contains 22 as substring.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 12905639266996 and 12905639267014.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (12905639261069) 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, 14026454 + ... + 14918199.

It is an arithmetic number, because the mean of its divisors is an integer number (877601909280).

Almost surely, 2^{12905639267069} is an apocalyptic number.

12905639267069 is a gapful number since it is divisible by the number (19) formed by its first and last digit.

It is an amenable number.

12905639267069 is a deficient number, since it is larger than the sum of its proper divisors (1135991281411).

12905639267069 is a wasteful number, since it uses less digits than its factorization.

12905639267069 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 28945460.

The product of its (nonzero) digits is 66134880, while the sum is 65.

The spelling of 12905639267069 in words is "twelve trillion, nine hundred five billion, six hundred thirty-nine million, two hundred sixty-seven thousand, sixty-nine".