12654744410921 has 2 divisors, whose sum is σ = 12654744410922. Its totient is φ = 12654744410920.

The previous prime is 12654744410879. The next prime is 12654744410947. The reversal of 12654744410921 is 12901444745621.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 10656705620521 + 1998038790400 = 3264461^2 + 1413520^2 .

It is a cyclic number.

It is not a de Polignac number, because 12654744410921 - 2³⁴ = 12637564541737 is a prime.

It is a super-2 number, since 2×12654744410921² (a number of 27 digits) contains 22 as substring.

It is a self number, because there is not a number n which added to its sum of digits gives 12654744410921.

It is not a weakly prime, because it can be changed into another prime (12654744410521) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 6327372205460 + 6327372205461.

It is an arithmetic number, because the mean of its divisors is an integer number (6327372205461).

Almost surely, 2^{12654744410921} is an apocalyptic number.

It is an amenable number.

12654744410921 is a deficient number, since it is larger than the sum of its proper divisors (1).

12654744410921 is an equidigital number, since it uses as much as digits as its factorization.

12654744410921 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 1935360, while the sum is 50.

The spelling of 12654744410921 in words is "twelve trillion, six hundred fifty-four billion, seven hundred forty-four million, four hundred ten thousand, nine hundred twenty-one".