12108353156657 has 2 divisors, whose sum is σ = 12108353156658. Its totient is φ = 12108353156656.

The previous prime is 12108353156621. The next prime is 12108353156687. The reversal of 12108353156657 is 75665135380121.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 11474539733281 + 633813423376 = 3387409^2 + 796124^2 .

It is a cyclic number.

It is not a de Polignac number, because 12108353156657 - 2¹² = 12108353152561 is a prime.

It is a super-2 number, since 2×12108353156657² (a number of 27 digits) contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 12108353156599 and 12108353156608.

It is not a weakly prime, because it can be changed into another prime (12108353156687) 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 as a sum of consecutive naturals, namely, 6054176578328 + 6054176578329.

It is an arithmetic number, because the mean of its divisors is an integer number (6054176578329).

Almost surely, 2^{12108353156657} is an apocalyptic number.

It is an amenable number.

12108353156657 is a deficient number, since it is larger than the sum of its proper divisors (1).

12108353156657 is an equidigital number, since it uses as much as digits as its factorization.

12108353156657 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 4536000, while the sum is 53.

The spelling of 12108353156657 in words is "twelve trillion, one hundred eight billion, three hundred fifty-three million, one hundred fifty-six thousand, six hundred fifty-seven".