12740266823 has 4 divisors (see below), whose sum is σ = 12741834960. Its totient is φ = 12738698688.

The previous prime is 12740266807. The next prime is 12740266831. The reversal of 12740266823 is 32866204721.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 32866204721 = 7 ⋅4695172103.

It is a cyclic number.

It is not a de Polignac number, because 12740266823 - 2⁴ = 12740266807 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 (12740266423) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 771818 + ... + 788151.

It is an arithmetic number, because the mean of its divisors is an integer number (3185458740).

Almost surely, 2^12740266823 is an apocalyptic number.

12740266823 is a deficient number, since it is larger than the sum of its proper divisors (1568137).

12740266823 is an equidigital number, since it uses as much as digits as its factorization.

12740266823 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1568136.

The product of its (nonzero) digits is 193536, while the sum is 41.

The spelling of 12740266823 in words is "twelve billion, seven hundred forty million, two hundred sixty-six thousand, eight hundred twenty-three".