12003860257 has 2 divisors, whose sum is σ = 12003860258. Its totient is φ = 12003860256.

The previous prime is 12003860249. The next prime is 12003860311. The reversal of 12003860257 is 75206830021.

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., 11362707216 + 641153041 = 106596^2 + 25321^2 .

It is a cyclic number.

It is not a de Polignac number, because 12003860257 - 2³ = 12003860249 is a prime.

It is a super-2 number, since 2×12003860257² (a number of 21 digits) contains 22 as substring.

It is not a weakly prime, because it can be changed into another prime (12003860657) 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, 6001930128 + 6001930129.

It is an arithmetic number, because the mean of its divisors is an integer number (6001930129).

Almost surely, 2^12003860257 is an apocalyptic number.

It is an amenable number.

12003860257 is a deficient number, since it is larger than the sum of its proper divisors (1).

12003860257 is an equidigital number, since it uses as much as digits as its factorization.

12003860257 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 20160, while the sum is 34.

The spelling of 12003860257 in words is "twelve billion, three million, eight hundred sixty thousand, two hundred fifty-seven".