12654744410881 has 4 divisors (see below), whose sum is σ = 12996764530132. Its totient is φ = 12312724291632.

The previous prime is 12654744410879. The next prime is 12654744410921. The reversal of 12654744410881 is 18801444745621.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 10104031971856 + 2550712439025 = 3178684^2 + 1597095^2 .

It is a cyclic number.

It is not a de Polignac number, because 12654744410881 - 2¹ = 12654744410879 is a prime.

It is a super-2 number, since 2×12654744410881² (a number of 27 digits) contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (12654744417881) 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, 171010059570 + ... + 171010059643.

It is an arithmetic number, because the mean of its divisors is an integer number (3249191132533).

Almost surely, 2^{12654744410881} is an apocalyptic number.

It is an amenable number.

12654744410881 is a deficient number, since it is larger than the sum of its proper divisors (342020119251).

12654744410881 is an equidigital number, since it uses as much as digits as its factorization.

12654744410881 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 342020119250.

The product of its (nonzero) digits is 6881280, while the sum is 55.

The spelling of 12654744410881 in words is "twelve trillion, six hundred fifty-four billion, seven hundred forty-four million, four hundred ten thousand, eight hundred eighty-one".