664126311203 has 2 divisors, whose sum is σ = 664126311204. Its totient is φ = 664126311202.

The previous prime is 664126311181. The next prime is 664126311221. The reversal of 664126311203 is 302113621466.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 664126311203 - 2²⁰ = 664125262627 is a prime.

It is not a weakly prime, because it can be changed into another prime (664126311703) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 332063155601 + 332063155602.

It is an arithmetic number, because the mean of its divisors is an integer number (332063155602).

Almost surely, 2^664126311203 is an apocalyptic number.

664126311203 is a deficient number, since it is larger than the sum of its proper divisors (1).

664126311203 is an equidigital number, since it uses as much as digits as its factorization.

664126311203 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 31104, while the sum is 35.

Adding to 664126311203 its reverse (302113621466), we get a palindrome (966239932669).

The spelling of 664126311203 in words is "six hundred sixty-four billion, one hundred twenty-six million, three hundred eleven thousand, two hundred three".