12354876660109 has 2 divisors, whose sum is σ = 12354876660110. Its totient is φ = 12354876660108.

The previous prime is 12354876660083. The next prime is 12354876660163. The reversal of 12354876660109 is 90106667845321.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 12349229137609 + 5647522500 = 3514147^2 + 75150^2 .

It is an emirp because it is prime and its reverse (90106667845321) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 12354876660109 - 2⁹ = 12354876659597 is a prime.

It is a super-2 number, since 2×12354876660109² (a number of 27 digits) contains 22 as substring.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (12354876666109) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 6177438330054 + 6177438330055.

It is an arithmetic number, because the mean of its divisors is an integer number (6177438330055).

It is a 1-persistent number, because it is pandigital, but 2⋅12354876660109 = 24709753320218 is not.

Almost surely, 2^{12354876660109} is an apocalyptic number.

It is an amenable number.

12354876660109 is a deficient number, since it is larger than the sum of its proper divisors (1).

12354876660109 is an equidigital number, since it uses as much as digits as its factorization.

12354876660109 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 13063680, while the sum is 58.

The spelling of 12354876660109 in words is "twelve trillion, three hundred fifty-four billion, eight hundred seventy-six million, six hundred sixty thousand, one hundred nine".