12102855829657 has 2 divisors, whose sum is σ = 12102855829658. Its totient is φ = 12102855829656.

The previous prime is 12102855829643. The next prime is 12102855829717. The reversal of 12102855829657 is 75692855820121.

It is a happy number.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 10669558412041 + 1433297417616 = 3266429^2 + 1197204^2 .

It is a cyclic number.

It is not a de Polignac number, because 12102855829657 - 2¹⁹ = 12102855305369 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 12102855829595 and 12102855829604.

It is not a weakly prime, because it can be changed into another prime (12102859829657) 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, 6051427914828 + 6051427914829.

It is an arithmetic number, because the mean of its divisors is an integer number (6051427914829).

Almost surely, 2^{12102855829657} is an apocalyptic number.

It is an amenable number.

12102855829657 is a deficient number, since it is larger than the sum of its proper divisors (1).

12102855829657 is an equidigital number, since it uses as much as digits as its factorization.

12102855829657 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 24192000, while the sum is 61.

The spelling of 12102855829657 in words is "twelve trillion, one hundred two billion, eight hundred fifty-five million, eight hundred twenty-nine thousand, six hundred fifty-seven".