12920269567 has 4 divisors (see below), whose sum is σ = 12966249456. Its totient is φ = 12874289680.

The previous prime is 12920269529. The next prime is 12920269589. The reversal of 12920269567 is 76596202921.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 76596202921 = 7 ⋅10942314703.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-12920269567 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 12920269567.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (12920261567) by changing a digit.

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 in 3 ways as a sum of consecutive naturals, for example, 22989523 + ... + 22990084.

It is an arithmetic number, because the mean of its divisors is an integer number (3241562364).

Almost surely, 2^12920269567 is an apocalyptic number.

12920269567 is a deficient number, since it is larger than the sum of its proper divisors (45979889).

12920269567 is an equidigital number, since it uses as much as digits as its factorization.

12920269567 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 45979888.

The product of its (nonzero) digits is 816480, while the sum is 49.

The spelling of 12920269567 in words is "twelve billion, nine hundred twenty million, two hundred sixty-nine thousand, five hundred sixty-seven".